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From kxe...@apache.org
Subject [04/32] git commit: updated refs/heads/1781-reorganize-and-improve-docs to 11fd32a
Date Fri, 14 Jun 2013 08:25:01 GMT
Describe couchdb config section.


Project: http://git-wip-us.apache.org/repos/asf/couchdb/repo
Commit: http://git-wip-us.apache.org/repos/asf/couchdb/commit/5bc869ea
Tree: http://git-wip-us.apache.org/repos/asf/couchdb/tree/5bc869ea
Diff: http://git-wip-us.apache.org/repos/asf/couchdb/diff/5bc869ea

Branch: refs/heads/1781-reorganize-and-improve-docs
Commit: 5bc869ea0637eda985496456e5c9762ebcbc78e2
Parents: 7c8fe09
Author: Alexander Shorin <kxepal@apache.org>
Authored: Tue Jun 11 17:37:21 2013 +0400
Committer: Alexander Shorin <kxepal@apache.org>
Committed: Tue Jun 11 18:54:13 2013 +0400

----------------------------------------------------------------------
 share/doc/build/Makefile.am      |   3 +
 share/doc/src/config/couchdb.rst | 180 ++++++++++++++++++++++++++++++++++
 share/doc/src/config/index.rst   |   1 +
 3 files changed, 184 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/couchdb/blob/5bc869ea/share/doc/build/Makefile.am
----------------------------------------------------------------------
diff --git a/share/doc/build/Makefile.am b/share/doc/build/Makefile.am
index ca9c8a6..42b43a8 100644
--- a/share/doc/build/Makefile.am
+++ b/share/doc/build/Makefile.am
@@ -56,6 +56,7 @@ html_files = \
     html/_sources/config/admins.txt \
     html/_sources/config/attachments.txt \
     html/_sources/config/cors.txt \
+    html/_sources/config/couchdb.txt \
     html/_sources/config/httpd.txt \
     html/_sources/config/index.txt \
     html/_sources/config/os-daemons.txt \
@@ -109,6 +110,7 @@ html_files = \
     html/config/admins.html \
     html/config/attachments.html \
     html/config/cors.html \
+    html/config/couchdb.html \
     html/config/httpd.html \
     html/config/index.html \
     html/config/os-daemons.html \
@@ -160,6 +162,7 @@ src_files = \
     ../src/config/admins.rst \
     ../src/config/attachments.rst \
     ../src/config/cors.rst \
+    ../src/config/couchdb.rst \
     ../src/config/httpd.rst \
     ../src/config/index.rst \
     ../src/config/os-daemons.rst \

http://git-wip-us.apache.org/repos/asf/couchdb/blob/5bc869ea/share/doc/src/config/couchdb.rst
----------------------------------------------------------------------
diff --git a/share/doc/src/config/couchdb.rst b/share/doc/src/config/couchdb.rst
new file mode 100644
index 0000000..a6824e7
--- /dev/null
+++ b/share/doc/src/config/couchdb.rst
@@ -0,0 +1,180 @@
+.. Licensed under the Apache License, Version 2.0 (the "License"); you may not
+.. use this file except in compliance with the License. You may obtain a copy of
+.. the License at
+..
+..   http://www.apache.org/licenses/LICENSE-2.0
+..
+.. Unless required by applicable law or agreed to in writing, software
+.. distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+.. WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+.. License for the specific language governing permissions and limitations under
+.. the License.
+
+.. highlight:: ini
+
+.. _config/couchdb:
+
+``[couchdb]`` :: Base CouchDB Options
+=====================================
+
+These options are under ``[couchdb]`` section.
+
+
+.. _config/couchdb/attachment_stream_buffer_size:
+
+``attachment_stream_buffer_size`` :: Attachment streaming buffer
+----------------------------------------------------------------
+
+Higher values may give better read performance due to less read operations
+and/or more OS page cache hits, but they can also increase overall response
+time for writes when there are many attachment write requests in parallel::
+
+  [couchdb]
+  attachment_stream_buffer_size = 4096
+
+
+.. _config/couchdb/database_dir:
+
+``database_dir`` :: Databases location directory
+------------------------------------------------
+
+Specifies location of CouchDB databases files (``*.couch`` named). This location
+should be writable and readable for user that runs CouchDB service (``couchdb``
+by default)::
+
+  [couchdb]
+  database_dir = /var/lib/couchdb
+
+
+.. _config/couchdb/delayed_commits:
+
+``delayed_commits`` :: Delayed commits
+--------------------------------------
+
+When this config value as ``false`` the CouchDB provides guaranty of fsync call
+before return ``HTTP 201 Created`` response on each document saving. Setting
+this config value as ``true`` may raise some overall performance with cost of
+losing durability - it's strongly not recommended to do such in production::
+
+  [couchdb]
+  delayed_commits = false
+
+.. warning::
+
+   Delayed commits are a feature of CouchDB that allows it to achieve better
+   write performance for some workloads while sacrificing a small amount of
+   durability. The setting causes CouchDB to wait up to a full second before
+   committing new data after an update. If the server crashes before the header
+   is written then any writes since the last commit are lost.
+
+
+.. _config/couchdb/file_compression:
+
+``file_compression`` :: Compression method for documents
+-----------------------------------------------------------
+
+.. versionchanged:: 1.2 Added `Google Snappy`_ compression algorithm
+
+Method used to compress everything that is appended to database and view index
+files, except for attachments (see the :ref:`[attachments] <config/attachments>`
+section). Available methods are:
+
+* ``none``: no compression
+* ``snappy``: use Google Snappy, a very fast compressor/decompressor.
+* ``deflate_N``: use zlib's deflate, ``N`` is the compression level which ranges
+  from 1 (fastest, lowest compression ratio) to 9 (slowest, highest compression
+  ratio)
+
+::
+
+  [couchdb]
+  file_compression = snappy
+
+.. _Google Snappy: http://code.google.com/p/snappy/
+
+
+.. _config/couchdb/max_dbs_open:
+
+``max_dbs_open`` :: Limit of simultaneously opened databases
+------------------------------------------------------------
+
+This option places an upper bound on the number of databases that can be open at
+one time. CouchDB reference counts database accesses internally and will close
+idle databases when it must. Sometimes it is necessary to keep more than the
+default open at once, such as in deployments where many databases will be
+continuously replicating::
+
+  [couchdb]
+  max_dbs_open = 100
+
+
+.. _config/couchdb/max_document_size:
+
+``max_document_size`` :: Maximum document size
+----------------------------------------------
+
+.. versionchanged:: 1.3 This option now actually works.
+
+Defines limit of size in bytes that document may has in JSON form. Doesn't
+applies for attachments since they are been transferred as stream of chunks.
+Do not set this value too small since you want be able to modify config options,
+database security and other options until you restore this value by edit config
+file::
+
+  [couchdb]
+  max_document_size = 4294967296 ; 4 GB
+
+
+.. _config/couchdb/os_process_timeout:
+
+``os_process_timeout`` :: External processes time limit
+-------------------------------------------------------
+
+Number of microseconds that external processes such as `query server` and
+`externals` may process CouchDB commands before return any result. Keeping
+this value smaller you'll be ensured that your services works fast, but you may
+tweak it depending on your needs::
+
+  [couchdb]
+  os_process_timeout = 5000 ; 5 sec
+
+
+.. _config/couchdb/uri_file:
+
+``uri_file`` :: Discovery CouchDB help file
+-------------------------------------------
+
+This file contains full `URI`_ that runs CouchDB. It's used to help discover
+CouchDB served port if it was set to ``0`` (e.g. automatically assigned any
+free one). This file should be writable and readable for user that runs CouchDB
+service (``couchdb`` by default)::
+
+  [couchdb]
+  uri_file = /var/run/couchdb/couchdb.uri
+
+.. _URI: http://en.wikipedia.org/wiki/URI
+
+
+.. _config/couchdb/util_driver_dir:
+
+``util_driver_dir`` :: CouchDB binary utility drivers
+-----------------------------------------------------
+
+Specified location of binary drivers (`icu`, `ejson`, etc.). This location and
+his content should be readable for user that runs CouchDB service::
+
+  [couchdb]
+  util_driver_dir = /usr/lib/couchdb/erlang/lib/couch-1.3.0/priv/lib
+
+
+.. _config/couchdb/view_index_dir:
+
+``view_index_dir`` :: View indexes location directory
+-----------------------------------------------------
+
+Specifies location of CouchDB view index files. This location should be writable
+and readable for user that runs CouchDB service (``couchdb`` by default)::
+
+  [couchdb]
+  view_index_dir = /var/lib/couchdb
+

http://git-wip-us.apache.org/repos/asf/couchdb/blob/5bc869ea/share/doc/src/config/index.rst
----------------------------------------------------------------------
diff --git a/share/doc/src/config/index.rst b/share/doc/src/config/index.rst
index a052d62..d351dc3 100644
--- a/share/doc/src/config/index.rst
+++ b/share/doc/src/config/index.rst
@@ -50,6 +50,7 @@ Content:
    admins
    attachments
    cors
+   couchdb
    httpd
    os-daemons
    ssl


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