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From "Linbin Chen (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (SOLR-1197) memcached implement solr cache for queryresultCache
Date Wed, 03 Jun 2009 09:44:07 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715879#action_12715879
] 

Linbin Chen edited comment on SOLR-1197 at 6/3/09 2:42 AM:
-----------------------------------------------------------

patch for Solr 1.3 

this patch only DocSetBase  implement Serializable

solr-memcache 

=====================readme.txt=========================
 

MemcachedCache instead of solr queryresultCache (default LRUCache)
 

config in solrconfig.xml to use solr-memcache

add newSearcher and firstSearcher Listener, such as:
 


<listener event="newSearcher" class="solr.MemcachedCache" />
<listener event="firstSearcher" class="solr.MemcachedCache" />
 

use listener only for get index version, to create memcached key

indexVersion is static long field of MemcachedCache.java.
 

//originalKey is QueryResultKey
memcached key = keyPrefix+indexVersion+"-"+originalKey.hashCode() 
 


<!--

MemcachedCache params:
 

memcachedHosts (required), "," split.
name (optional) no default.
expTime (optional) default 1800 s (= 30 minute)
defaultPort (optional) default 11211
keyPrefix (optional) default ""
 

-->

<queryResultCache

class="solr.MemcachedCache"
memcachedHosts="192.168.0.100,192.168.0.101:1234,192.168.0.103"
expTime="21600"
defaultPort="11511"
keyPrefix="shard-1-"/>
 

dep jar:

memcached-2.2.jar
spy-2.4.jar
 

solr-memcache.patch for solr 1.3
 

if download and unzip to d:/apache-solr-1.3.0
 

copy patch-build.xml and solr-memcache.patch to (d:/apache-solr-1.3.0)
 


D:\apache-solr-1.3.0>ant -f patch-build.xml -Dpatch.file=solr-memcache.patch
Buildfile: patch-build.xml

apply-patch:
    [patch] patching file src/java/org/apache/solr/search/DocSet.java

BUILD SUCCESSFUL
Total time: 0 seconds
 

if exist d:/apache-solr-1.3.0/contrib/solr-memcache, if no exist you can unzip solr-memcache.zip
to that dir

and dist
 


D:\apache-solr-1.3.0>ant dist
...
 

look D:\apache-solr-1.3.0\dist\apache-solr-memcache-1.3.0.jar

      was (Author: chenlb):
    patch for Solr 1.3 

this patch only DocSetBase  implement Serializable
  
> memcached implement solr cache for queryresultCache 
> ----------------------------------------------------
>
>                 Key: SOLR-1197
>                 URL: https://issues.apache.org/jira/browse/SOLR-1197
>             Project: Solr
>          Issue Type: New Feature
>    Affects Versions: 1.3
>         Environment: multiple slave solr replication environment
>            Reporter: Linbin Chen
>             Fix For: 1.4
>
>         Attachments: SOLR_1197-solr-memcache.patch
>
>
> multiple slave create query result together, and slaves can share that.
> implement  memcached cache instead LRUCache
> my implement:
> solr-memcache.zip http://solr-side.googlecode.com/files/solr-memcache.zip 
> object transport by net need Serializable, so need patch solr 1.3, DocSetBase implements
Serializable, see http://code.google.com/p/solr-side/issues/detail?id=1&can=1

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