GNet Solutions » Website Hosting

Feature #211

Updated by Daniel Curtis over 11 years ago

With the addition of a load balancer and multiple instances of the same parts2.altservice.com site on different servers, I needed to have session data stored at a central location to be accessed by each web server. Currently I use memcached, which Magento supports through the Zend Framework. So adding support is done by making sure that the @php.ini@ has the following information: 
 > [Session] 
 > session.save_handler = memcached 
 > session.save_path = "tcp://yourMemcachedIP:11211" 
 This sets PHP to use memcached for session storage. 

 Next the @app/etc/local.xml@ in the Magento directory local.xml must be edited to define memcached storage: 
 <pre><code class="xml"> 
 <config> 
 <global> 
     <install> 
         <date></date> 
     </install> 
     <crypt> 
         <key></key> 
     </crypt> 
     <disable_local_modules>false</disable_local_modules> 
     <resources> 
         <db> 
             <table_prefix></table_prefix> 
         </db> 
         <default_setup> 
             <connection> 
             </connection> 
         </default_setup> 
     </resources> 
     <session_save><![CDATA[memcache]]></session_save> <!-- db / memcache / empty=files --> 
     <session_save_path><![CDATA[tcp://X.X.X.X:11211?persistent=1&weight=2&timeout=10&retry_interval=10]]></session_save_path><!-- e.g. for memcache session save handler tcp://10.0.0.1:11211?persistent=1&weight=2&timeout=10&retry_interval=10 --> 
     <session_cache_limiter><![CDATA[private]]></session_cache_limiter><!-- see http://php.net/manual/en/function.session-cache-limiter.php#82174 for possible values --> 
     <cache> 
         <backend>memcached</backend><!-- apc / memcached / xcache / empty=file --> 
         <slow_backend>database</slow_backend> <!-- database / file (default) - used for 2 levels cache setup, necessary for all shared memory storages --> 
         <slow_backend_store_data></slow_backend_store_data> <!-- 1 / 0 (default) - used for 2 levels cache setup, sets whether store data in db slow cache backend --> 
         <auto_refresh_fast_cache>1</auto_refresh_fast_cache> <!-- 1 / 0 (default) - used for 2 levels cache setup, sets whether refresh data in fast cache backend --> 
         <memcached><!-- memcached cache backend related config --> 
             <servers><!-- any number of server nodes can be included --> 
                 <server> 
                     <host><![CDATA[X.X.X.X]]></host> 
                     <port><![CDATA[11211]]></port> 
                     <persistent><![CDATA[1]]></persistent> 
                 </server> 
                 <server> 
                     <host><![CDATA[X.X.X.X]]></host> 
                     <port><![CDATA[11211]]></port> 
                     <persistent><![CDATA[1]]></persistent> 
                 </server> 
             </servers> 
         </memcached> 
     </cache> 
 </global> 
 <admin> 
     <routers> 
         <adminhtml> 
             <args> 
                 <frontName><![CDATA[admin]]></frontName> 
             </args> 
         </adminhtml> 
     </routers> 
 </admin> 
 </code></pre> 

 And finally make sure to have the internal *+Cache Management turned off+*

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