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From kmil...@apache.org
Subject [60/94] [abbrv] incubator-geode git commit: GEODE-1952: removed native client docs, set aside until native client code is merged in (see GEODE-1964)
Date Fri, 14 Oct 2016 22:17:58 GMT
http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/disk-policy.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/disk-policy.html.md.erb b/geode-docs/nativeclient/client-cache/disk-policy.html.md.erb
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----
-title:  DiskPolicy
----
-
-<a id="disk-policy__section_F3A921FC67B44DD795BD9B5C180FCBB1"></a>
-If the `lru-entries-limit` attribute is greater than zero, the optional `disk-policy` attribute determines how over-limit LRU entries are handled. LRU entries over the limit are either destroyed by default (`disk-policy` is none ) or written to disk (`overflows`).
-
-**Note:**
-If `LruEntriesLimit` is `0`, or `CachingEnabled` is `false`, do not set the `disk-policy` attribute. An `IllegalStateException` is thrown if the attribute is set.
-
-This declaration causes LRU to overflow to disk:
-
-``` pre
-<region-attributes lru-entries-limit="20000"
-    disk-policy="overflows">
-  <persistence-manager ... />
-</region-attributes>
-```
-
-Overflow requires a persistence manager for cache-to-disk and disk-to-cache operations. See [PersistenceManager](persistence-manager.html#persistence-manager).
-
-## <a id="disk-policy__section_FE325E59644149ACA43DA2ABB4CF0F7A" class="no-quick-link"></a>Overflowing Data to Disk
-
-Region data can be stored to disk using the overflow process to satisfy region capacity restrictions without completely destroying the local cache data. The storage mechanism uses disk files to hold region entry data. When an entry is overflowed, its value is written to disk but its key and entry object remain in the cache. This also uses the region attribute [DiskPolicy](disk-policy.html#disk-policy).
-
-Overflow allows you to keep the region within a user-specified size in memory by relegating the values of least recently used (LRU) entries to disk. Overflow essentially uses disk as a swap space for entry values. When the region size reaches the specified threshold, entry values are moved from memory to disk, as shown in the following figure. If an entry is requested whose value is only on disk, the value is copied back into memory, possibly causing the value of a different LRU entry to be overflowed to disk.
-
-<a id="disk-policy__fig_67963EC3BDD64272BBDAD9517E1D78A0"></a>
-
-<span class="figtitleprefix">Figure: </span>Data Flow Between Overflow Region and Disk Files
-
-<img src="../common/images/client-cache-data-flow.gif" alt="Data Flow Between Overflow Region and Disk Files" id="disk-policy__image_687021ECD97A40FB843DBDE59C555384" class="image" />
-
-In this figure the value of the LRU entry X has been moved to disk to recover space in memory. The key for the entry remains in memory. From the distributed system perspective, the value on disk is as much a part of the region as the data in memory. A `get` performed on region B looks first in memory and then on disk as part of the local cache search.

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/entries.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/entries.html.md.erb b/geode-docs/nativeclient/client-cache/entries.html.md.erb
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----
-title:  Region Entries
----
-
-Region entries hold cached application data. Entries are automatically managed according to region attribute settings.
-
-You can create, update, invalidate, and destroy entries through explicit API calls or through operations distributed from other caches.
-
-When the number of entries is very large, a partitioned region can provide the required data management capacity if the total size of the data is greater than the heap in any single JVM.
-
-When an entry is created, a new object is instantiated in the region containing:
-
--   The entry key.
--   The entry value. This is the application data object. The entry value may be set to `NULL`, which is the equivalent of an invalid value.
-
-Entry operations invoke callbacks to user-defined application plug-ins. In this chapter, the calls that may affect the entry operation itself (by providing a value or aborting the operation, for example) are highlighted, but all possible interactions are not listed. For details, see [Application Plug-Ins](application-plugins.html#application-plugins).
-
-`DateTime` objects must be stored in the cache in UTC, so that times correspond between client and server. If you use a date with a different time zone, convert it when storing into and retrieving from the cache.
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/expiration-attributes.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/expiration-attributes.html.md.erb b/geode-docs/nativeclient/client-cache/expiration-attributes.html.md.erb
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----
-title:  Specifying Expiration Attributes
----
-
-<a id="expiration-attributes__section_4901B92DE7EB408F81792920C9E4ED7C"></a>
-Expiration attributes govern the automatic eviction of regions and region entries from the cache. Eviction is based on the time elapsed since the last update or access to the object. This is referred to as the least-recently-used (LRU) eviction process. Expiration options range from marking the expired object as invalid to completely removing it from the distributed cache. Eviction can help keep data current by removing outdated entries, prompting a reload the next time they are requested. Eviction may also be used to recover space in the cache by clearing out unaccessed entries and regions.
-
-Similar to application plug-ins, expiration activities are hosted by each application that defines a region in its cache.
-
-The following example shows a declaration that causes the region's entries to be invalidated in the local cache after they have not been accessed for one minute.
-
-``` pre
-<region-attributes>
-    <entry-idle-time>
-        <expiration-attributes timeout="60" action="local-invalidate"/>
-    </entry-idle-time>
-</region-attributes>
-```
-
-Region and region entry expiration attributes are set at the region level. By default, regions and entries do not expire. The following attributes cover two types of expiration: time-to-live (TTL) and idle timeout.
-
-<table>
-<colgroup>
-<col width="50%" />
-<col width="50%" />
-</colgroup>
-<tbody>
-<tr class="odd">
-<td><code class="ph codeph">RegionTimeToLive</code></td>
-<td>Number of seconds that the region remains in the cache after the last creation or update before the expiration action occurs.</td>
-</tr>
-<tr class="even">
-<td><code class="ph codeph">EntryTimeToLive</code></td>
-<td>For entries, the counter is set to zero for <code class="ph codeph">create</code> and <code class="ph codeph">put</code> operations. Region counters are reset when the region is created and when an entry has its counter reset. An update to an entry causes the time-to-live (TTL) counters to be reset for the entry and its region.</td>
-</tr>
-<tr class="odd">
-<td><code class="ph codeph">RegionIdleTimeout</code></td>
-<td>Number of seconds that the region remains in the cache after the last access before the expiration action occurs.</td>
-</tr>
-<tr class="even">
-<td><code class="ph codeph">EntryIdleTimeout</code></td>
-<td>The idle timeout counter for an object is reset when its TTL counter is reset. An entry's idle timeout counter is also reset whenever the entry is accessed through a <code class="ph codeph">get</code> operation.
-<p>The idle timeout counter for a region is reset whenever the idle timeout is reset for one of its entries.</p></td>
-</tr>
-</tbody>
-</table>
-
-## <a id="expiration-attributes__section_F338C1117B7B44398F59523B881EDD55" class="no-quick-link"></a>Using Statistics to Measure Expiration
-
-Expiration is measured by comparing expiration attribute settings with the last accessed time and last modified time statistics. These statistics are directly available to applications through the `CacheStatistics` object that is returned by the `Region::getStatistics` and `RegionEntry::getStatistics` functions. The `CacheStatistics` object also provides a function for resetting the statistics counters.
-
-## <a id="expiration-attributes__section_6B402F97ECD8492A8798AC838D0BB606" class="no-quick-link"></a>Expiration Actions
-
-You can specify one of the following actions for each expiration attribute:
-
--   **Destroy**. Removes the object completely from the cache. For regions, all entries are destroyed as well. Destroy actions are distributed according to the region's distribution settings.
--   **Invalidate**. Marks the object as invalid. For entries, the value is set to `NULL`. You invalidate a region by invalidating all its entries. Invalidate actions are distributed according to the region's distribution settings. When an entry is invalid, a `get` causes the cache to retrieve the entry according to the steps described in [Entry Retrieval](accessing-entries.html#accessing-entries__section_AD6AFD842C144C128FA1C7F0B9283372).
--   **Local destroy**. Destroys the object in the local cache but does not distribute the operation.
--   **Local invalidate**. Invalidates the object in the local cache but does not distribute the operation.
-    **Note:**
-    Destruction and invalidation cause the same event notification activities whether carried out explicitly or through expiration activities.
-
-## <a id="expiration-attributes__section_57F5B32CE9B34F29907E8697F51817F9" class="no-quick-link"></a>Region Expiration
-
-Expiration activities in distributed regions can be distributed or performed only in the local cache. So one cache could control region expiration for a number of caches in the distributed system.

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/getting-the-region-size.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/getting-the-region-size.html.md.erb b/geode-docs/nativeclient/client-cache/getting-the-region-size.html.md.erb
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----
-title:  Getting the Region Size
----
-
-The `Region` API provides a `size` method (`Size` property for .NET) that gets the size of a region.
-
-For native client regions, this gives the number of entries in the local cache, not on the servers.
-
-See the `Region` API documentation for details.
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/initial-capacity.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/initial-capacity.html.md.erb b/geode-docs/nativeclient/client-cache/initial-capacity.html.md.erb
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----
-title:  InitialCapacity
----
-
-<a id="initial-capacity__section_AB0163B072DA4DA0B858293CA02E91A1"></a>
-Use this attribute, together with the `LoadFactor` attribute, to set the initial parameters on the underlying hashmap that stores region entries. This is the number of entries that the region map will be ready to hold when it is created.
-
-This declaration sets the region's initial capacity to `10000`:
-
-``` pre
-<region-attributes initial-capacity="10000">
-</region-attributes>
-```
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/invalidating-cached-entries.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/invalidating-cached-entries.html.md.erb b/geode-docs/nativeclient/client-cache/invalidating-cached-entries.html.md.erb
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----
-title:  Invalidating or Destroying Cached Entries
----
-
-<a id="invalidating-cached-entries__section_9244FABA5204452A8D25D1184310B7EE"></a>
-Invalidating an entry sets the entry's value to `NULL`. Destroying it removes the entry from the region altogether. These operations can be carried out in the local cache in the following ways:
-
--   Through direct API calls from the client.
--   Through expiration activities based on the entry's statistics and the region's attribute settings.
-
-**Note:**
-A user-defined cache writer is called before an operation is completed, and can abort an entry destroy operation.
-
-Whether carried out explicitly or through expiration activities, invalidation and destruction cause event notification: The `CacheEvent` object has an `isExpiration` flag that is set to true for events resulting from expiration activities, and set to `false` for all other events.
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/invalidating-region.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/invalidating-region.html.md.erb b/geode-docs/nativeclient/client-cache/invalidating-region.html.md.erb
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----
-title:  Invalidating and Destroying Regions
----
-
-Invalidation marks all entries contained in the region as invalid (with null values). Destruction removes the region and all of its contents from the cache.
-
-<a id="invalidating-region__section_6F7E304D1D5743F1B53FCBD4F82651D0"></a>
-You can execute these operations explicitly in the local cache in the following ways:
-
--   Through direct API calls from the native client.
--   Through expiration activities based on the region's statistics and attribute settings.
-
-In either case, you can perform invalidation and destruction as a local or a distributed operation.
-
--   A local operation affects the region only in the local cache.
--   A distributed operation works first on the region in the local cache and then distributes the operation to all other caches where the region is defined. This is the proper choice when the region is no longer needed, or valid, for any application in the distributed system.
--   If the region on the server is configured as a partitioned region, it cannot be cleared using API calls from the native client.
-
-A user-defined cache writer can abort a region destroy operation. Cache writers are synchronous listeners with the ability to abort operations. If a cache writer is defined for the region anywhere in the distributed system, it is invoked before the region is explicitly destroyed.
-
-Region invalidation and destruction can cause other user-defined application plug-ins to be invoked as well. These plug-ins are described in detail in [Application Plug-Ins](application-plugins.html#application-plugins).
-
-Whether carried out explicitly or through expiration activities, invalidation and destruction cause event notification.
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/load-factor.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/load-factor.html.md.erb b/geode-docs/nativeclient/client-cache/load-factor.html.md.erb
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----
-title:  LoadFactor
----
-
-<a id="load-factor__section_D4102F0D396E4E2DA05654A20FA0723D"></a>
-Use this attribute, together with the `InitialCapacity` attribute, to set the initial parameters on the underlying hashmap that stores region entries. When the number of entries in the map exceeds the `LoadFactor` times current capacity, the capacity is increased and the map is rehashed. You get the best performance if you configure a properly sized region at the start and do not have to rehash it.
-
-This declaration sets the region's load factor to `0.75` :
-
-``` pre
-<region-attributes load-factor="0.75">
-</region-attributes>
-```
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/lru-entries-limit.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/lru-entries-limit.html.md.erb b/geode-docs/nativeclient/client-cache/lru-entries-limit.html.md.erb
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----
-title:  LruEntriesLimit
----
-
-<a id="concept_75D723D60E044FF9AE97C939699AB10A__section_B0174EA802CB47C9981EF3BDF4B7D169"></a>
-This attribute sets the maximum number of entries to hold in a caching region. When the capacity of the caching region is exceeded, a least-recently-used (LRU) algorithm is used to evict entries.
-
-**Note:**
-This is a tuning parameter that affects system performance.
-
-When eviction is configured, memory consumption or entry count is monitored and, when capacity is reached, Geode makes way for new entries by removing or overflowing the stalest LRU entries to disk.
-
-If you use disk data overflow to supplement memory for your data cache, make sure you have enough disk space to store the data.
-
-This declaration limits the region to 20,000 entries:
-
-``` pre
-<region-attributes lru-entries-limit="20000"
-     initial-capacity="20000"
-     load-factor="1">
-</region-attributes>
-```
-
-Evicted entries can be destroyed or moved to disk as an extension of the cache. See [DiskPolicy](disk-policy.html#disk-policy).
-
-**Note:**
-When `CachingEnabled` is `false`, do not set the `LruEntriesLimit` attribute. An `IllegalStateException` is thrown if the attribute is set.
-
-See also [Controlling Cache Size](controlling-cache-size.html#controlling-cache-size).
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/managing-lifetime-cached-object.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/managing-lifetime-cached-object.html.md.erb b/geode-docs/nativeclient/client-cache/managing-lifetime-cached-object.html.md.erb
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----
-title:  Managing the Lifetime of a Cached Object
----
-
-All cacheable objects derive from `SharedBase` , which provides reference counting. Cacheable objects are referenced using `SharedPtr` types.
-
-<a id="managing-lifetime-cached-object__section_5F8E6FE4F9AB4C658516DB0D31DD4FF8"></a>
-When `SharedPtr` retrieves a cached object, the object remains alive as long as that pointer or the cache itself references the object.
-
-A native client may have many pointers that reference an object. Regardless of how many pointers to the object are deleted, the object remains alive until the last remaining pointer is deleted. At that point the object is deleted.
-
-This is a very simple example:
-
-``` pre
-CacheableStringPtr p = CacheableString::create("string");
-region.put("key", p) ;
-```
-
-In the example:
-
--   The act of object creation allocates memory and initializes the object.
--   When you assign the object to a `SharedPtr` , you relinquish control of the lifetime of that object to the reference counting mechanism for the cache.
--   The put operation does not actually copy the object into the cache. Rather, it copies a `SharedPtr` into the cache's hashmap. Consequently, the object remains alive in the cache when the original `SharedPtr` goes away.
-
-The client can make use of an object after you have initialized the object. For example, another `SharedPtr` might issue a `get` to retrieve the object from the cache:
-
-``` pre
-CacheableStringPtr p2 = region.get("key");
-```
-
-Because `p` (the original `SharedPtr`) and `p2` point to the same object in memory, it is possible under some circumstances for multiple `SharedPtr` types to work on the same object in data storage.
-
-**Note:**
-Once you have put an object into the cache, do not delete it explicitly. Attempting to do so can produce undesirable results.
-
-## <a id="managing-lifetime-cached-object__section_8753DE6DF3864BEC806D39F623CBE3E0" class="no-quick-link"></a>Changed Objects
-
-If an object update is received, the cache no longer holds the same object. Rather, it holds a completely different instance of the object. The client does not see the updates until it calls a `get` to fetch the object again from the local cache, or (in a cache plug-in) calls `EntryEvent::getNewValue`.
-
-For more about plug-ins, see [Application Plug-Ins](application-plugins.html#application-plugins).
-
-## <a id="managing-lifetime-cached-object__section_065526A7FFBB464591A5E119EB8D6CA6" class="no-quick-link"></a>Object Expiration
-
-When a cache automatically deletes an object as a result of an expiration action, the reference counting pointers protect the client from situations that might otherwise result if the cache actually freed the object's memory. Instead, the client disconnects the object from the cache by deleting the cache's `SharedPtr` reference, while leaving untouched any client threads with a `SharedPtr` to that object.
-
-## <a id="managing-lifetime-cached-object__section_6D700999EE534BD7999D5B428301F5A6" class="no-quick-link"></a>Object Lifetime Across the Distributed Cache
-
-An object remains alive until every copy of the object is gone. In distributed regions, expiration activities can be local or distributed, depending on a region's distribution settings. One cache could control the expiration of all copies of an object in all the caches in the distributed system. Alternatively, each cache could control the expiration of its own local copy of the object. If the configuration gives each cache local control, and the expiration parameters are set to different lengths of time in different caches, some copies of an object may still exist after it has disappeared in other caches. See [Expiration Attributes](expiration-attributes.html#expiration-attributes) for more information.

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/notification-for-operations.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/notification-for-operations.html.md.erb b/geode-docs/nativeclient/client-cache/notification-for-operations.html.md.erb
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@@ -1,16 +0,0 @@
----
-title:  Notification for Operations
----
-
-<a id="notification-for-operations__section_53F43C51118C4087915CB954CA3439E0"></a>
-Listeners are invoked for client-initiated operations only after the client operation succeeds on the server. Listener invocation on the client indicates that the server has the same data as the client.
-
-If a client operation fails on the server, the operation is rolled back, assuming that no other thread has modified the data in the intervening period. Rollback may not be possible in cases where the entry has been evicted by LRU or expiration during this period. Thus when an exception is received from the server for an operation, local changes may not have been rolled back
-
-## <a id="notification-for-operations__section_48240559E20D4FAF8FDEC8D62C098357" class="no-quick-link"></a>Event Notification Sequence
-
-Events received on the clients that originated on the server invoke the subscription for the event as seen by the server. Events originating on the client invoke the subscription as seen by the client.
-
-For example, a client that receives a `create` and an `update` from the server fires a `create` event and an `update` event because that is how the server saw it. A cacheless client that does two consecutive put operations has two `afterCreate` events invoked on the originating client because the client does not have any history about the first put , since it is cacheless.
-
-For the same sequence, the server sees an `afterCreate` and an `afterUpdate` event, and a remote client receiving the event sees an `afterCreate` followed by an `afterUpdate` event. A client that caches locally sees an `afterCreate` and an `afterUpdate` for the same scenario (as will the server and remote clients).

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/overview-client-cache.html.md.erb
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diff --git a/geode-docs/nativeclient/client-cache/overview-client-cache.html.md.erb b/geode-docs/nativeclient/client-cache/overview-client-cache.html.md.erb
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----
-title:  About the Native Client Cache
----
-
-The cache consists of data regions, each of which can contain any number of entries. Region entries hold the cached data. Every entry has a key that uniquely identifies it within the region and a value where the data object is stored.
-
-The `Cache` instance allows your process to set general parameters for communication between a cache and other caches in the distributed system, and to create and access any region in the cache.
-
-Regions are created from the `Cache` instance. Regions provide the entry point to the interfaces for instances of `Region` and `RegionEntry`.
-
-## <a id="native-client-cache__section_A0F2E9EF30324736BD0D5F92FE3D1BD7" class="no-quick-link"></a>Main Features and Functionality
-
-The native client cache provides the following features and functionality.
-
--   Local and distributed data caching for fast access.
--   Data distribution between applications on the same or different platforms.
--   Local and remote data loading through application plug-ins.
--   Application plug-ins for synchronous and asynchronous handling of data events.
--   Automated and application-specific data eviction for freeing up space in the cache, including optional overflow to disk.
--   System message logging, and statistics gathering and archiving.
-
-For more information specific to your client programming language, see the online API documentation and [Working with the C++ API](../cpp-caching-api/cpp-caching-api.html#concept_CEC658A999414AC3A494578C214BF64E) and [Working with the .NET Caching API](../dotnet-caching-api/dotnet-caching-api.html#concept_FC6776DCE6ED48B887A6137761104AA4).
-
-

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@@ -1,224 +0,0 @@
----
-title:  PersistenceManager
----
-
-For each region, if the disk-policy attribute is set to overflows, a persistence-manager plug-in must perform cache-to-disk and disk-to-cache operations. See [Application Plug-Ins](application-plugins.html#application-plugins).
-
-Persistence manager declaration:
-
-``` pre
-<region-attributes lru-entries-limit="nnnnn"
-        disk-policy="overflows">
-    <persistence-manager library-name="libraryName"
-            library-function-name="functionName">
-        <properties>
-            <property name="propertyName" value="propertyValue" />
-        </properties>
-    </persistence-manager>
-</region-attributes>
-```
-
-The optional properties set parameters for the plug-in.
-
-
-## <a id="persistence-manager__section_9FC7089FDF8044868F17A2659397402A" class="no-quick-link"></a>Using SQLite as a Persistence Manager
-
-The Geode native client distribution includes a persistence manager that uses the open-source SQLite library.
-
-SQLite is a software library that implements a self-contained transactional SQL database. SQLite does not require its own server or separate configuration, and the source code for SQLite is in the public domain. For more information on SQLite, see [http://www.sqlite.org](http://www.sqlite.org).
-
-Each SQLite persistence manager persists its region data in a SQLite database that is stored in disk files. In a given native client application process, each region must have a unique persistence (overflow) directory.
-
-<a id="persistence-manager__fig_6A0C9F1A29134ACBA0FDD8236CD836B6"></a>
-<span class="figtitleprefix">Figure: </span>SQLite Database Persistence Manager Directory Structure
-
-<img src="../../images/SQLite_Persistence_Mgr.png" id="persistence-manager__image_BD1AF915E09548D68D9307E2F52737F9" class="image" />
-
-## <a id="persistence-manager__section_3C6991A39C5F4FB8A945EF15FB089287" class="no-quick-link"></a>SQLite Persistence Manager Region Attributes
-
-The following table describes the region attributes that can be configured for the SQLite persistence manager.
-
-| Property             | Description                                                                                                                                                                                                                                                                                                | Default Setting                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
-|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| PersistenceDirectory | Directory where each region's database files are stored. This setting must be different for each region including regions in different processes. This directory is created by the persistence manager. The persistence manager fails to initialize if this directory already exists or cannot be created. | Default is to create a subdirectory named GemFireRegionData in the directory where the process using the region was started.                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
-| PageSize             | Maximum page size of the SQLite database. SQLite can limit the size of a database file to prevent the database file from growing too large and consuming too much disk space.                                                                                                                              | Ordinarily, if no value is explicitly provided, SQLite creates a database with the page size set to SQLITE\_DEFAULT\_PAGE\_SIZE (default is 1024). However, based on certain device characteristics (for example, sector-size and atomic write() support) SQLite may choose a larger value. PageSize specifies the maximum value that SQLite will be able to choose on its own. See <a href="http://www.sqlite.org/compile.html#default_page_size">http://www.sqlite.org/compile.html#default_page_size</a>. for more details on SQLITE\_DEFAULT\_PAGE\_SIZE. |
-| MaxPageCount         | Maximum number of pages in one database file.                                                                                                                                                                                                                                                              | SQLite default, which is 1073741823.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
-
-## <a id="persistence-manager__section_A9583FBEB5D74B92AD61CB6158AE2B4C" class="no-quick-link"></a>Configuring the SQLite Persistence Manager Plug-In for C++ Applications
-
-To load the SQLite persistence manager plug-in for C++ applications, you can configure it either in your client's `cache.xml` or programmatically using the native client C++ API.
-
-The following is an example of how to specify the following region attributes in your client's cache.xml:
-
-``` pre
-<region-attributes>
-   <persistence-manager library-name="libSqLiteImpl.so" library-function-name="createSqLiteInstance">
-      <properties>
-         <property name="PersistenceDirectory" value="/xyz"/>
-         <property name="PageSize" value="65536"/>
-         <property name="MaxPageCount" value="1073741823"/>
-      </properties>
-   </persistence-manager>
-</region-attributes>
-```
-
-## C++ API Example
-
-To use the native client C++ API, set SQLite persistence manager attributes programmatically as follows:
-
-``` pre
-PropertiesPtr sqliteProperties = Properties::create();
-sqliteProperties->insert("MaxPagecount", "5");
-sqliteProperties->insert("PageSize", "1024");
-sqliteProperties->insert("PersistenceDirectory", "SqLite-Test779");
-regionFactory->setPersistenceManager("SqLiteImpl","createSqLiteInstance",
-          sqliteProperties);
-```
-
-## <a id="persistence-manager__section_7410F68E0BB144A584A9AFE7E8CDBE22" class="no-quick-link"></a>Configuring the SQLite Persistence Manager Plug-In for .NET Applications
-
-To load the SQLite persistence manager plug-in for .NET applications, you can configure it either in your client's cache.xml or programmatically using the .NET API:
-
-``` pre
-<persistence-manager library-name="Gemstone.Gemfire.Plugins.SqLite" 
-   library-function-name="GemStone.GemFire.Plugins.SqLite.SqLiteImpl&lt;System.Object, System.Object&gt;.Create"> 
-    <properties>
-       <property name="PersistenceDirectory" value="SqLite"/>
-       <property name="MaxPageCount" value="1073741823"/>
-       <property name="PageSize" value="65536"/>
-    </properties>
-</persistence-manager>
-```
-
-## .NET API Example
-
-To use the native client .NET API, set the SQLite persistence manager attributes programmatically as follows:
-
-``` pre
-Properties<string, string> sqliteProperties = new Properties<string, string>();
-sqliteProperties.Insert("PageSize", "65536");
-sqliteProperties.Insert("MaxFileSize", "51200000");
-sqliteProperties.Insert("PersistenceDirectory", SqLiteDir);
-rf.SetPersistenceManager("Gemstone.Gemfire.Plugins.SqLite", 
-"Gemstone.Gemfire.Plugins.SqLiteSqLiteImpl<System.Object,System.Object>.Create",
-sqliteProperties);
-```
-
-You can also use and configure the C++ SQLite persistence manager library from your .NET application as follows:
-
-``` pre
-rf.SetPersistenceManager("SqliteImpl", "createSqLiteInstance", sqliteProperties);
-```
-
-## <a id="persistence-manager__section_9D038C438E01415EA4D32000D5CB5596" class="no-quick-link"></a>Implementing a PersistenceManager with the IPersistenceManager Interface
-
-When developing .NET managed applications, you can use the IPersistenceManager managed interface to implement your own persistence manager. The following code sample provides the IPersistenceManager interface:
-
-``` pre
-/// <summary> 
-/// IPersistenceManager interface for persistence and overflow. 
-/// This class abstracts the disk-related operations in case of persistence or overflow to disk. 
-/// A specific disk storage implementation will implement all the methods described here. 
-/// </summary> 
-generic<class TKey, class TValue> 
-public interface class IPersistenceManager 
- { 
-   public: 
-   /// <summary> 
-   /// Called after an implementation object is created. Initializes all the implementation specific environments needed. 
-   /// </summary> 
-   /// <param name="region"> 
-   /// Region for which this PersistenceManager is initialized. 
-   /// </param> 
-   /// <param name="diskProperties"> 
-   /// Configuration Properties used by PersistenceManager implementation. 
-   /// </param> 
-   void Init(IRegion<TKey, TValue>^ region, Properties<String^, String^>^ diskProperties); 
-   
-   /// <summary> 
-   /// Writes a key, value pair of region to the disk. The actual file or database related write operations should be implemented in this method. 
-   /// </summary> 
-   /// <param name="key"> 
-   /// the key to write. 
-   /// </param> 
-   /// <param name="value"> 
-   /// the value to write. 
-   /// </param> 
-   void Write(TKey key, TValue value); 
-
-   /// <summary> 
-   /// This method is not used. 
-   /// </summary> 
-   bool WriteAll(); 
-
-   /// <summary> 
-   /// Reads the value for the key from the disk. 
-   /// </summary> 
-   /// <param name="key"> 
-   /// key for which the value has to be read. 
-   /// </param> 
-   TValue Read(TKey key); 
-
-   /// <summary> 
-   /// This method is not used. 
-   /// </summary> 
-   bool ReadAll(); 
-
-   /// <summary> 
-   /// Destroys the entry specified by the key in the argument. 
-   /// </summary> 
-   /// <param name="key"> 
-   /// key of the entry which is being destroyed. 
-   /// </param>
-   void Destroy(TKey key); 
-
-   /// <summary> 
-   /// Closes the persistence manager instance. 
-   /// </summary> 
-   void Close(); 
-}
-```
-
-The following is a sample interface implementation:
-
-``` pre
-class MyPersistenceManager<TKey, TValue> : IPersistenceManager<TKey, TValue> 
-   { 
-      #region IPersistenceManager<TKey,TValue> Members
-      public void Close() 
-      { 
-         throw new NotImplementedException(); 
-      } 
-
-      public void Destroy(TKey key) 
-      { 
-         throw new NotImplementedException(); 
-      } 
-
-      public void Init(IRegion<TKey, TValue> region, Properties<string, string> disk Properties) 
-      { 
-         throw new NotImplementedException(); 
-      } 
-
-      public TValue Read(TKey key) 
-      { 
-         throw new NotImplementedException(); 
-      } 
-
-      public void Write(TKey key, TValue value) 
-      { 
-         throw new NotImplementedException(); 
-      } 
-
-      public bool ReadAll() 
-      { 
-         throw new NotImplementedException(); 
-      } 
-
-      public bool WriteAll() 
-      {
-         throw new NotImplementedException(); 
-      } 
-      #endregion 
-   }
-```

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----
-title:  Programmatic Region Creation
----
-
-You create regions programmatically with the `regionFactory` class.
-
-**Note:**
-Before creating a region, specify region attributes. See [Region Attributes](region-attributes.html#region-attributes).
-
-Create your regions using the `regionFactory` class.
-
-**C++ RegionFactory Example**
-
-``` pre
-RegionFactoryPtr regionFactory =
-    cachePtr->createRegionFactory(CACHING_PROXY);
-RegionPtr regPtr0 = regionFactory->setLruEntriesLimit(20000)
-        ->create("exampleRegion0");
-    
-```
-
-**Note:** For more information on how to create a region, see [Working with the C++ API](../cpp-caching-api/cpp-caching-api.html#concept_CEC658A999414AC3A494578C214BF64E), [Working with the .NET API](../dotnet-caching-api/dotnet-caching-api.html#concept_FC6776DCE6ED48B887A6137761104AA4), and the native client API reference.
-
-

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----
-title:  Region Access
----
-
-You can use `Cache::getRegion` to retrieve a reference to a specified region.
-
-`RegionPtr` returns `NULL` if the region is not already present in the application's cache. A server region must already exist.
-
-A region name *cannot* contain these characters:
-
--   &lt;
--   &gt;
--   :
--   "
--   /
--   \\
--   |
--   ?
--   \*
-
-

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----
-title:  Mutable and Immutable Region Attributes
----
-
-Attributes that are immutable (fixed) after region creation govern storage location, data distribution, statistics, application plug-ins, and the configuration and management of the region's data hashmap.
-
-This table lists the immutable attributes and their default settings.
-
-<a id="region-attributes-desc__table_B1CC036A7929449A8CD06E56678A6CB2"></a>
-
-| Immutable Region Attribute                                                                                                                | Default Setting |
-|-------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
-| See [CachingEnabled](caching-enabled.html#caching-enabled)                                                        | true            |
-| See [InitialCapacity](initial-capacity.html#initial-capacity)                                                     | 16 (entries)    |
-| See [LoadFactor](load-factor.html#load-factor)                                                                    | 0.75            |
-| See [ConcurrencyLevel](concurrency-level.html#concurrency-level)                                                  | 16              |
-| See [DiskPolicy](disk-policy.html#disk-policy)                                                                    |                 |
-| See [PersistenceManager](persistence-manager.html#persistence-manager)                                            | NULL            |
-| PartitionResolver. See [Specifying Application Plug-In Attributes](application-plugins.html#application-plugins). |                 |
-
-
-Mutable region attributes identify expiration and cache listener, cache writer and cache loader actions that are run from the defining client. The next table lists the mutable attributes that generally can be modified after region creation by using the `AttributesMutator` for the region.
-
-<a id="region-attributes-desc__table_98120276A645432A840F991C18039621"></a>
-
-| Mutable Region Attribute                                                                                                                 | Default Setting |
-|------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
-| Expiration attributes. See [Specifying Expiration Attributes](expiration-attributes.html#expiration-attributes). | no expiration   |
-| See [LruEntriesLimit](lru-entries-limit.html#concept_75D723D60E044FF9AE97C939699AB10A).                          | 0 (no limit)    |
-| CacheLoader. See [Specifying Application Plug-In Attributes](application-plugins.html#application-plugins).      |                 |
-| CacheWriter. See [Specifying Application Plug-In Attributes](application-plugins.html#application-plugins).      |                 |
-| CacheListener. See [Specifying Application Plug-In Attributes](application-plugins.html#application-plugins).    |                 |
-
-
-See [Specifying Application Plug-In Attributes](application-plugins.html#application-plugins) for information about using `AttributesMutator` with cache listeners, cache loaders, and cache writers.
-
-The remainder of this section examines these attributes in detail. Throughout the descriptions, `cache.xml` file snippets show how each attribute can be set declaratively.
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/region-attributes.html.md.erb
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----
-title:  Region Attributes
----
-
-Region attributes govern the automated management of a region and its entries.
-
-Region attribute settings determine where the data resides, how the region is managed in memory, and the automatic loading, distribution, and expiration of region entries.
-
--   **[Specifying Region Attributes](../../nativeclient/client-cache/specify-region-attributes.html)**
-
--   **[RegionShortcuts](../../nativeclient/client-cache/region-shortcuts.html)**
-
--   **[Mutable and Immutable Region Attributes](../../nativeclient/client-cache/region-attributes-desc.html)**
-
--   **[CachingEnabled](../../nativeclient/client-cache/caching-enabled.html)**
-
--   **[InitialCapacity](../../nativeclient/client-cache/initial-capacity.html)**
-
--   **[LoadFactor](../../nativeclient/client-cache/load-factor.html)**
-
--   **[ConcurrencyLevel](../../nativeclient/client-cache/concurrency-level.html)**
-
--   **[ConcurrencyChecksEnabled](../../nativeclient/client-cache/concurrency-checks-enabled.html)**
-
--   **[LruEntriesLimit](../../nativeclient/client-cache/lru-entries-limit.html)**
-
--   **[DiskPolicy](../../nativeclient/client-cache/disk-policy.html)**
-
--   **[PersistenceManager](../../nativeclient/client-cache/persistence-manager.html)**
-
--   **[Specifying Application Plug-In Attributes](../../nativeclient/client-cache/application-plugins.html)**
-
--   **[Specifying Expiration Attributes](../../nativeclient/client-cache/expiration-attributes.html)**
-
-

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----
-title:  RegionShortcuts
----
-
-<a id="region-shortcuts__section_62D2AB580EDB4165970E4FC42A35C80B"></a>
-Geode provides a number of predefined, shortcut region attributes settings for your use, in `RegionShortcut`.
-
-Shortcut attributes are a convenience only. They are named attributes that Geode has already stored for you. You can override their settings by storing new attributes with the same `id` as the predefined attributes.
-
-You can also create custom region attributes and store them with an identifier for later retrieval. Both types of stored attributes are referred to as named region attributes. You can create and store your attribute settings in the `cache.xml` file and through the API.
-
-Retrieve named attributes by providing the ID to the region creation. This example uses the shortcut `CACHING_PROXY` attributes to create a region:
-
-``` pre
-<region name="testRegion" refid="CACHING_PROXY"/>
-```
-
-You can modify named attributes as needed. For example, this adds a cache listener to the region:
-
-``` pre
-<region name="testRegion" refid="CACHING_PROXY">
-    <region-attributes>
-        <cache-listener library-name="myAppLib"
-            library-function-name ="myCacheListener" />
-    </region-attributes>
-</region>
-```
-
-In this example, the modified region shortcut is saved to the cache using the region attribute id, for retrieval and use by a second region:
-
-``` pre
-<region name="testRegion" refid="CACHING_PROXY">
-    <region-attributes id="Caching_Proxy_With_Listener">
-        <cache-listener library-name="myAppLib"
-            library-function-name ="myCacheListener" />
-    </region-attributes>
-</region>
-<region name="newTestRegion" refid="Caching_Proxy_With_Listener"/>
-```
-
-## <a id="region-shortcuts__section_49150358B8F443E8AF027E4E920E820A" class="no-quick-link"></a>Shortcut Attribute Options
-
-You can select the most common region attributes settings from `RegionShortcut`, the predefined named region attributes.
-
-This section provides an overview of the options available in the region shortcut settings.
-
-**Note:**
-For complete listings and descriptions, including information on the underlying `RegionAttributes` settings for each shortcut, see the online documentation for `RegionShortcut`.
-
-These are the options available in `RegionShortcut`.
-
-**Communication with Servers and Data Storage**
-
--   `PROXY` does not store data in the client cache, but connects the region to the servers for data requests and updates, interest registrations, and so on.
--   `CACHING_PROXY` stores data in the client cache and connects the region to the servers for data requests and updates, interest registrations, and so on.
--   `LOCAL` stores data in the client cache and does not connect the region to the servers. This is a client-side-only region.
-
-**Data Eviction**
-
-For the non-`PROXY` regions--the regions that store data in the client cache--you can add data eviction:
-
--   `ENTRY_LRU` causes least recently used data to be evicted from memory when the region reaches the entry count limit.
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/client-cache/regions.html.md.erb
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----
-title:  Regions
----
-
-You create cache regions either programmatically or through declarative statements in the `cache.xml` file. Generally, a cache is organized and populated through a combination of the two approaches.
-
-<a id="regions__section_1BE4ABB76537488C966E452C2D89478F"></a>
-The region is the core building block of the Geode distributed system. All cached data is organized into data regions and you do all of your data puts, gets, and querying activities against them.
-
-A distributed region can be either non-partitioned or a partitioned region. See [Data Regions](../../basic_config/data_regions/chapter_overview.html) for detailed descriptions of both non-partitioned and partitioned regions. Region creation is subject to attribute consistency checks. The requirements for consistency between attributes are detailed both in the online API documentation and throughout the discussion of [Region Attributes](region-attributes.html#region-attributes).
-
--   **[Declarative Region Creation](../../nativeclient/client-cache/declarative-region-creation.html)**
-
-    Declarative region creation involves placing the region's XML declaration, with the appropriate attribute settings, in the `cache.xml` file that is loaded at cache creation.
-
--   **[Programmatic Region Creation](../../nativeclient/client-cache/programmatic-region-creation.html)**
-
-    You create regions programmatically with the `regionFactory` class.
-
--   **[Invalidating and Destroying Regions](../../nativeclient/client-cache/invalidating-region.html)**
-
-    Invalidation marks all entries contained in the region as invalid (with null values). Destruction removes the region and all of its contents from the cache.
-
--   **[Region Access](../../nativeclient/client-cache/region-access.html)**
-
-    You can use `Cache::getRegion` to retrieve a reference to a specified region.
-
--   **[Getting the Region Size](../../nativeclient/client-cache/getting-the-region-size.html)**
-
-    The `Region` API provides a `size` method (`Size` property for .NET) that gets the size of a region.
-
-

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----
-title:  Registering Interest for Entries
----
-
-For native client regions, you can programmatically register interest in entry keys stored on a cache server region. A client region receives update notifications from the cache server for the keys of interest.
-
-You can register interest for specific entry keys or for all keys. Regular expressions can be used to register interest for keys whose strings match the expression. You can also unregister interest for specific keys, groups of keys based on regular expressions, or for all keys.
-
-**Note:** Interest registration and unregistration are symmetrical operations. Consequently, you cannot register interest in all keys and then unregister interest in a specific set of keys. Also, if you first register interest in specific keys with `registerKeys`, then call `registerAllKeys`, you must call `unregisterAllKeys` before specifying interest in specific keys again.
-
-
-## <a id="registering-interest-for-entries__section_C9A3D7F193B24ACD83B2D67813E596A0" class="no-quick-link"></a>Client API for Registering Interest
-
-You register client interest through the C++ or NET API. The C++ API provides the `registerKeys`, `registerAllKeys`, and `registerRegex` methods, with corresponding unregistration accomplished using the `unregisterKeys`, `unregisterAllKeys`, and `unregisterRegex` methods. The .NET API provides the `RegisterKeys`, `RegisterAllKeys`, and `RegisterRegex` methods, with corresponding unregistration accomplished using the `UnregisterKeys`, `UnregisterAllKeys`, and `UnregisterRegex` methods.
-
-The `registerKeys`, `registerRegex` and `registerAllKeys` methods have the option to populate the cache with the registration results from the server. The `registerRegex` and `registerAllKeys` methods can also optionally return the current list of keys registered on the server.
-
-## <a id="registering-interest-for-entries__section_C1A3F89EE73448D7AFF2076F41848F55" class="no-quick-link"></a>Setting Up Client Notification
-
-In addition to the programmatic function calls, to register interest for a server region and receive updated entries you need to configure the region with the `PROXY` or `CACHING_PROXY RegionShortcut` setting. The region's pool should have `subscription-enabled=true` set either in the client XML or programmatically via a `CacheFactory::setSubscriptionEnabled(true)` API call. Otherwise, when you register interest, you will get an `UnsupportedOperationException`.
-
-``` pre
-<region name = "listenerWriterLoader" refid="CACHING_PROXY">
-   ... 
-```
-
-Both native clients and Java clients that have subscriptions enabled track and drop (ignore) any duplicate notifications received. To reduce resource usage, a client expires tracked sources for which new notifications have not been received for a configurable amount of time.
-
-**Notification Sequence**
-
-Notifications invoke `CacheListeners` of cacheless clients in all cases for keys that have been registered on the server. Similarly, invalidates received from the server invoke `CacheListeners` of cacheless clients.
-
-If you register to receive notifications, listener callbacks are invoked irrespective of whether the key is in the client cache when a `destroy` or `invalidate` event is received.
-
-## <a id="registering-interest-for-entries__section_8772147940754C2D9688C789EB2F2AA6" class="no-quick-link"></a>Registering Interest for Specific Keys
-
-You register and unregister interest for specific keys through the `registerKeys` and `unregisterKeys` functions. You register interest in a key or set of keys by specifying the key name using the programmatic syntax shown in the following example:
-
-``` pre
-keys0.push_back(keyPtr1);
-keys1.push_back(keyPtr3);
-regPtr0->registerKeys(keys0);
-regPtr1->registerKeys(keys1); 
-```
-
-The programmatic code snippet in the next example shows how to unregister interest in specific keys:
-
-``` pre
-regPtr0->unregisterKeys(keys0);
-regPtr1->unregisterKeys(keys1);
-```
-
-## <a id="registering-interest-for-entries__section_EA4525CCDC474DD495410E948EAF566C" class="no-quick-link"></a>Registering Interest for All Keys
-
-If the client registers interest in all keys, the server provides notifications for all updates to all keys in the region. The next example shows how to register interest in all keys:
-
-``` pre
-regPtr0->registerAllKeys();
-regPtr1->registerAllKeys();
-```
-
-The following example shows a code sample for unregistering interest in all keys.
-
-``` pre
-regPtr0->unregisterAllKeys();
-regPtr1->unregisterAllKeys();
-```
-
-## <a id="registering-interest-for-entries__section_BD50B80FCE9F429C8F6A9FEA818D5A91" class="no-quick-link"></a>Registering Interest Using Regular Expressions
-
-The `registerRegex` function registers interest in a regular expression pattern. The server automatically sends the client changes for entries whose keys match the specified pattern.
-
-*Keys must be strings in order to register interest using regular expressions.*
-
-The following example shows interest registration for all keys whose first four characters are `Key-`, followed by any string of characters. The characters `.*` represent a wildcard that matches any string.
-
-``` pre
-regPtr1->registerRegex("Key-.*");
-```
-
-To unregister interest using regular expressions, you use the `unregisterRegex` function. The next example shows how to unregister interest in all keys whose first four characters are `Key-`, followed by any string (represented by the `.*` wildcard).
-
-``` pre
-regPtr1->unregisterRegex("Key-.*");
-```
-
-## <a id="registering-interest-for-entries__section_2D71A423B185493489129AAC30DC6733" class="no-quick-link"></a>Register Interest Scenario
-
-In this register interest scenario, a cache listener is used with a cacheless region that has `subscription-enabled` set to `true`. The client region is configured with caching disabled; client notification is enabled; and a cache listener is established. The client has not registered interest in any keys.
-
-When a value changes in another client, it sends the event to the server. The server will not send the event to the cacheless client, even though `client-notification` is set to `true`.
-
-To activate the cache listener so the cacheless region receives updates, the client should explicitly register interest in some or all keys by using one of the API calls for registering interest. This way, the client receives all events for the keys to which it has registered interest. This applies to Java-based clients as well as native clients.

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----
-title:  Entry Distribution Requirements
----
-
-Entry data distributed among members of the distributed system must be serializable. Entry keys and values are serialized for distribution.
-
-If a native client defines a region, it must register any serializable types for all classes of objects stored in the region. This includes entries that the application gets or puts, as well as entries that are pushed to the client's cache automatically through distribution. The types must be registered before the native client connects to the distributed system.
-
-See [Serializing Data](../cpp-caching-api/serialization_overview.html#concept_2A8DC49D93394392BA34B17AA3452B14) for more information about these requirements.
-
-

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----
-title:  Specifying Region Attributes
----
-
-Region attributes govern the automated management of a region and its entries.
-
-Specify region attributes before creating the region. You can do this either through the declarative XML file or through the API. The API includes classes for defining a region's attributes before creation and for modifying some of them after creation. For details, see the online API documentation for `RegionShortcut`, `RegionAttributes`, `AttributesFactory`, and `AttributesMutator`.
-
-

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----
-title:  Troubleshooting
----
-
-This section provides troubleshooting information for the native client.
-
-## <a id="troubleshooting__section_32E817A073B8408F8FEDB5599C5CCEF6" class="no-quick-link"></a>Cannot Acquire Windows Performance Data
-
-When you attempt to run performance measurements for the native client on Windows, you may encounter the following error message in the run logs:
-
-``` pre
-Can't get Windows performance data. RegQueryValueEx returned 5
-```
-
-This can occur because incorrect information is returned when a Win32 application calls the ANSI version of `RegQueryValueEx` Win32 API with `HKEY_PERFORMANCE_DATA`. This error is described in Microsoft KB article ID 226371 at [http://support.microsoft.com/kb/226371/en-us](http://support.microsoft.com/kb/226371/en-us).
-To successfully acquire Windows performance data, you need to verify that you have the proper registry key access permissions in the system registry. In particular, make sure that `Perflib` in the following registry path is readable (`KEY_READ` access) by the Geode process:
-
-``` pre
-HKEY_LOCAL_MACHINE\
-    SOFTWARE\
-    Microsoft\
-    Windows NT\
-    CurrentVersion\
-    Perflib
-```
-
-An example of reasonable security on the performance data would be to grant administrators `KEY_ALL_ACCESS` and interactive users `KEY_READ` access. This particular configuration prevents non-administrator remote users from querying performance data.
-
-See [http://support.microsoft.com/kb/310426](http://support.microsoft.com/kb/310426) and [http://support.microsoft.com/kb/146906](http://support.microsoft.com/kb/146906) for instructions about how to ensure that Geode processes have access to the registry keys associated with performance.
-
-## <a id="troubleshooting__section_65EC3B1EAC55421BB734E72E7BFEBFFC" class="no-quick-link"></a>Generating a Process Memory Dump Image for Fatal Errors
-
-You can generate a process memory dump image (core files in Unix systems and minidumps in Windows). The image is produced when a fatal error occurs that normally terminates the program.
-
-When the system property `crash-dump-enabled` is set to `true`, a dump image is generated (the default is `true`). The dump file is generated in the same location as the `log-file` directory, and has the same prefix as the log file. The name is `<prefix>-<time>.core.<pid>` in Unix, and `<prefix>-<time>-<pid>.dmp` in Windows).
-
-Unix systems generate core files automatically for such errors, but this option is useful for providing a custom location and name, as well as for systems where core dump generation is disabled. For Unix, when system core dump generation is turned on (`ulimit -c`) this property can be set to `false`.
-
-For .NET clients, when this property is set then `AccessViolation` exceptions are trapped and a crash dump is created to assist with further analysis. Applications receive a `FatalInternalException` for this case, with the `InnerException` set to the originating `AccessViolationException`.
-
-This requires the availability of `dbghelp.dll` on Windows, either in the same directory as `gfcppcache.dll` or in the system `PATH`. The file is installed by default, though for Windows 2000 a newer version may be required for minidumps. For Unix systems, the `gcore` command should be available (gdb &gt; 5.2 on Linux; available by default in Solaris).

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----
-title:  Updating Entries
----
-
-<a id="updating-entries__section_720D480EDB8D4578BCAB5A368D6D5512"></a>
-A cached entry can be updated using these methods:
-
--   Explicitly, when a client invokes a `put` operation on an existing entry.
--   Implicitly, when a `get` is performed on an entry that has an invalid value in the cache. An entry can become invalid through an explicit API call, through an automated expiration action, or by being created with a value of null.
--   Automatically, when a new entry value is distributed from another cache.
-
-Similar to entry creation, all of these operations can be aborted by a cache writer.
-
-The `get` function returns a direct reference to the entry value object. A change made using that reference is called an in-place change because it directly modifies the contents of the value in the local cache. For details on safe cache access, see [Managing the Lifetime of a Cached Object](managing-lifetime-cached-object.html#managing-lifetime-cached-object).
-
-

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----
-title:  Using serverKeys to Retrieve a Set of Region Keys
----
-
-<a id="using-serverkeys-to-retrieve__section_8D2276A2D70E4F80998D26BB74F9681C"></a>
-You can retrieve the set of keys defined in the cache server process that are associated with the client region by using the `Region::serverKeys` API function. If the server region is defined as a replicate, the keys returned consist of the entire set of keys for the region.
-
-The following example shows how the client can programmatically call `serverKeys`.
-
-``` pre
-VectorOfCacheableKey keysVec;
-region->serverKeys( keysVec );
-size_t vlen = keysVec.size();
-bool foundKey1 = false;
-bool foundKey2 = false;
-for( size_t i = 0; i < vlen; i++ ) {
-    CacheableStringPtr strPtr = dynCast<CacheableStringPtr> keysVec.at( i );
-    std::string veckey = strPtr->asChar();
-    if ( veckey == "skey1" ) {
-        printf( "found skey1" );
-        foundKey1 = true;
-    }
-    if ( veckey == "skey2" ) {
-        printf( "found skey2" );
-        foundKey2 = true;
-    }
-}
-```
-
-An `UnsupportedOperationException` occurs if the client region is not a native client region. A `MessageException` occurs if the message received from the server could not be handled, which can occur if an unregistered `typeId` is received in the reply.
-
-

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----
-title:  Using Thread Safety in Cache Management
----
-
-When you perform structural changes on your cache, such as creating or closing a `Cache`, `Pool`, or `Region`, synchronize your operations or do them in a single thread.
-
-Other non-structural operations, like region gets, puts, and queries, are thread safe, and you can perform them in a multithreaded way. There are caveats to this, for example, when two threads update the same key simultaneously, there is no way to determine which thread's operation will prevail.
-
-You may need to protect cached objects from concurrent usage and modification. The native client does not guard cached objects themselves from concurrent access.
-
-Always catch and handle exceptions that may be thrown, for problems like trying to create a `Pool` with the same name more than once.
-
-

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----
-title:  Connection Pools
----
-
-Clients contain connection pools. Each region is associated with a connection pool using a region attribute, and operations on the region use connections from the respective pools.
-
-The server connectivity options are specified in the connection pool configuration. Each pool has a minimum and maximum number of connections.
-
-Each cache operation that requires server connectivity obtains a connection from the pool for the server group that the operation affects, performs the operation using the connection, and returns the connection to the pool. If the pool size is less than the maximum number of connections and all connections are in use, the connection pool creates a new connection and returns it. If the pool is at the maximum number of connections, that thread blocks until a connection becomes available or a `free-connection-timeout` occurs. If a `free-connection-timeout` occurs, an `AllConnectionsInUse` exception is thrown.
-
-The connection pool has a configurable timeout period that is used to expire idle connections. The idle connections are expired until the pool has the minimum number of connections. A monitoring thread expires idle connections, adds sufficient connections to bring up the count to minimum, and closes connections whose lifetime has been exceeded. See the `load-conditioning-interval` and `idle-timeout` attributes of the [&lt;pool&gt;](../../reference/topics/client-cache.html#cc-pool) element. A separate thread (ping) tests each connected endpoint for its status and if the endpoint is not reachable, the thread closes all connections that have been made to the endpoint. See the `ping-interval` attribute of the &lt;pool&gt; element&gt;.
-
-<a id="client-load-balancing__fig_226964BAA1464DBA9F5CEDC2CB7B3585"></a>
-<span class="figtitleprefix">Figure: </span>Logical Architecture of Client/Server Connections
-
-<img src="../common/images/client-server-arch.gif" id="client-load-balancing__image_1E8316666E1B4CC2ADE4D927B629E49F" class="image" />
-
-When a connection receives an exception, the operation is failed over to another connection from the pool. The failover mechanism obtains the endpoint to failover to from the locator or from the specified endpoint list in the pool.
-
-

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----
-title:  Server Locators
----
-
-Server locators continuously monitor server availability and server load information. The client is configured with a list of server locators and consults a server locator to request a connection to a server in the distributed system.
-
-Locators provide clients with dynamic server discovery and server load balancing. They give clients connection information for the server with the least load at any given time.
-
-Server locators provide these main features:
-
--   **Automated discovery of servers and locators**. Adding and removing servers or locators is made easy as each client does not require a list of servers to be configured at the time of pool creation.
--   **Client load rebalancing**. Server locators give clients dynamic server information and provide server load rebalancing after servers depart or join the system.
--   **High availability**. When a client/server connection receives an exception, the connection is automatically failed over to another available connection in the pool. Redundancy is also provided for client subscriptions.
-
-Alternatively, you can configure a pool statically with a list of endpoints. When the pools are statically configured, a round-robin load balancing policy is used to distribute connections across the servers.
-
-

http://git-wip-us.apache.org/repos/asf/incubator-geode/blob/381d0faa/geode-docs/nativeclient/connection-pools/client-load-balancing.html.md.erb
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----
-title:  How Client Load Balancing Works
----
-
-In a distributed system, servers can be added or removed and their capacity to service new client connections may vary. The server connectivity options are specified in the connection pool configuration.
-
-The Geode connection pool API supports connecting to servers through server locators or directly connecting to servers.
-
--   **[Server Locators](../../nativeclient/connection-pools/about-server-locators.html)**
-
-    Server locators continuously monitor server availability and server load information. The client is configured with a list of server locators and consults a server locator to request a connection to a server in the distributed system.
-
--   **[Connection Pools](../../nativeclient/connection-pools/about-connection-pools.html)**
-
-    Clients contain connection pools. Each region is associated with a connection pool using a region attribute, and operations on the region use connections from the respective pools.
-
--   **[Discovering Locators Dynamically](../../nativeclient/connection-pools/discovering-locators-dynamically.html)**
-
-    A background thread periodically queries the locator for any other locators joining the distributed system.
-
-


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