Difference between revisions of "Install Redis Caching for Magento"

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(→‎3) Install)
(→‎4) Configure Magento to use Redis)
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===4) Configure Magento to use Redis ===
 
===4) Configure Magento to use Redis ===
 +
Now comes the fun part, you are going to need to setup redis in your local.xml file.
 +
 +
I recommend always making a backup copy of your local.xml file before making any changes to it
 +
 +
cp app/etc/local.xml app/etc/local.xml-bk-date
 +
 +
Now lets install redis as a backend cache
 +
 +
vim app/etc/local.xml
 +
 +
Now add the following to your configuration
 +
 +
<!-- This is a child node of config/global -->
 +
<cache>
 +
  <backend>Cm_Cache_Backend_Redis</backend>
 +
  <backend_options>
 +
    <server>127.0.0.1</server> <!-- or absolute path to unix socket -->
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    <port>6379</port>
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    <persistent></persistent> <!-- Specify unique string to enable persistent connections. E.g.: sess-db0;
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    <database>0</database> <!-- Redis database number; protection against accidental data loss is improved by not sharing databases -->
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    <password></password> <!-- Specify if your Redis server requires authentication -->
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    <force_standalone>0</force_standalone>  <!-- 0 for phpredis, 1 for standalone PHP -->
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    <connect_retries>1</connect_retries>    <!-- Reduces errors due to random connection failures; a value of 1 will not retry after the first failure -->
 +
    <read_timeout>10</read_timeout>        <!-- Set read timeout duration; phpredis does not currently support setting read timeouts -->
 +
    <automatic_cleaning_factor>0</automatic_cleaning_factor> <!-- Disabled by default -->
 +
    <compress_data>1</compress_data>  <!-- 0-9 for compression level, recommended: 0 or 1 -->
 +
    <compress_tags>1</compress_tags>  <!-- 0-9 for compression level, recommended: 0 or 1 -->
 +
    <compress_threshold>20480</compress_threshold>  <!-- Strings below this size will not be compressed -->
 +
    <compression_lib>gzip</compression_lib> <!-- Supports gzip, lzf, lz4 (as l4z) and snappy -->
 +
    <use_lua>0</use_lua> <!-- Set to 1 if Lua scripts should be used for some operations -->
 +
  </backend_options>
 +
</cache>

Revision as of 15:49, 24 December 2013

Install Redis Caching for Magento

How to install redis for backend caching? You see alot of talk about using apc and memcached for Magento caching, but if you are looking for a more stable caching, then redis is for you.

1) Install Redis and phpRedis

This can be done using yum, which makes this step pretty easy. 

yum install redis php-pecl-redis

service redis start

chkconfig redis on

Now to verify that redis is chkconfig on 

chkconfig --list redis

2) Install Cm_Cache_Backend_Redis Magento Extension

This is the extension that is required on versions of CE 1.7.0.2 and older, as Magento 1.8.0.0 it comes pre installed. 

wget -O Cm_Cache_Backend_Redis.tar.gz https://github.com/colinmollenhour/Cm_Cache_Backend_Redis/tarball/master

tar xzf Cm_Cache_Backend_Redis.tar.gz 

cd colinmollenhour-Cm_Cache_Backend_Redis-9bd58d2/

cp Cm_Cache_Backend_Redis/Cm /path/to/magento/app/code/local/

cp Cm_Cache_Backend_Redis/lib/Credis /path/to/magento/lib/

cat > /path/to/magento/app/etc/modules/Cm_Cache.xml <<eof
<?xml version="1.0" encoding="UTF-8"?>
<config>
   <modules>
       <Cm_Cache>
           <active>true</active>
           <codePool>local</codePool>
       </Cm_Cache>
   </modules>
</config>
eof

3) Install Credis Library

Again not needed if you are using Magento 1.8.0.0 or higher, as its already included in the base install 

wget -O credis.tar.gz https://github.com/colinmollenhour/credis/tarball/master

tar xzf credis.tar.gz

cd colinmollenhour-credis-5a48ac8/

cp ./* /path/to/magento/lib/Credis/

cd /path/to/magento/

chown -R username. lib/Credis/

chown -R username. app/code/local/Cm/

chown -R username. app/etc/modules/Cm_Cache.

4) Configure Magento to use Redis

Now comes the fun part, you are going to need to setup redis in your local.xml file.

I recommend always making a backup copy of your local.xml file before making any changes to it 

cp app/etc/local.xml app/etc/local.xml-bk-date

Now lets install redis as a backend cache 

vim app/etc/local.xml

Now add the following to your configuration 

<cache>
  <backend>Cm_Cache_Backend_Redis</backend>
  <backend_options>
    <server>127.0.0.1</server> 
    <port>6379</port>
    <persistent></persistent> 
    <password></password> 
    <force_standalone>0</force_standalone>  
    <connect_retries>1</connect_retries>    
    <read_timeout>10</read_timeout>         
    <automatic_cleaning_factor>0</automatic_cleaning_factor> 
    <compress_data>1</compress_data>  
    <compress_tags>1</compress_tags>  
    <compress_threshold>20480</compress_threshold>  
    <compression_lib>gzip</compression_lib> 
    <use_lua>0</use_lua> 
  </backend_options>
</cache>
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