{"id":1374,"date":"2010-07-22T20:15:49","date_gmt":"2010-07-22T14:45:49","guid":{"rendered":"http:\/\/www.tothenew.com\/blog\/?p=1374"},"modified":"2014-05-06T13:44:34","modified_gmt":"2014-05-06T08:14:34","slug":"tomcat-6-in-memory-session-replication","status":"publish","type":"post","link":"https:\/\/www.tothenew.com\/blog\/tomcat-6-in-memory-session-replication\/","title":{"rendered":"Tomcat 6 in-memory session replication"},"content":{"rendered":"

Hi All,<\/p>\n

Here are the few basic steps that you need to follow in order to achieve the in-memory session replication between two or more Tomcat 6 instances. <\/p>\n

This blog refers the Apache Tomcat documentation as found here: http:\/\/tomcat.apache.org\/tomcat-6.0-doc\/cluster-howto.html<\/a>.
\nThe Tomcat documentation provides more detailed explanation of the Clustering concepts as well as the definition of tags, attributes etc. used in server.xml<\/strong> file.<\/p>\n

Step 1:<\/strong> Include the <distributable><\/strong> tag in web.xml<\/strong> file i.e. you can simple write the following line in your deployment descriptor(i.e. web.xml):<\/p>\n

\n
\r\n  \r\n<\/pre>\n<\/blockquote>\n
Please read the following link to know more about this tag: http:\/\/wiki.metawerx.net\/wiki\/Web.xml.Distributable<\/a><\/p>\n
Step 2:<\/strong> Add the following lines of XML in the server.xml<\/strong> file inside the <Engine><\/strong> element\/tag:<\/p>\n
\n
\r\n\r\n      \r\n                     \r\n                      \r\n                                \r\n                              \r\n                                \r\n                                              \r\n                                <\/Sender>\r\n                      \r\n                      \r\n                  <\/Channel>\r\n            \r\n           \r\n           \r\n                   \r\n                  \r\n     <\/Cluster>\r\n .\r\n .\r\n .\r\n .\r\n <\/Engine>\r\n <\/pre>\n<\/blockquote>\n
Please note that there might be some other elements such as <Host>, <Realm> <\/strong>etc. inside the <Engine><\/strong> element. Also, for each tomcat instance the value defined for the ‘port’<\/strong> attribute of the <Receiver><\/strong> tag must be unique.<\/p>\n
And, that’s all. You now have a basic session-replication in place. Your sessions are replicated amongst all the tomcat instances which are part of your cluster.<\/p>\n
NOTE:<\/strong> Please make sure if you make any changes to the “context.xml<\/strong>” file, you have to delete the following xml file located in the <TOMCAT_HOME>\/conf\/Catalina\/localhost\/{yourAppName}.xml<\/strong>. If you don’t delete this file, then your changes will be ignored and the settings defined in this file will take effect.<\/p>\n
Cheers!!!<\/p>\n
Abhishek Tejpaul
\nabhishek@intelligrape.com
\n[Intelligrape Software Pvt. Ltd.]<\/p>\n","protected":false},"excerpt":{"rendered":"
Hi All, Here are the few basic steps that you need to follow in order to achieve the in-memory session replication between two or more Tomcat 6 instances. This blog refers the Apache Tomcat documentation as found here: http:\/\/tomcat.apache.org\/tomcat-6.0-doc\/cluster-howto.html. The Tomcat documentation provides more detailed explanation of the Clustering concepts as well as the definition […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":2},"categories":[1],"tags":[591,593,590,592,17,589],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/1374"}],"collection":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/comments?post=1374"}],"version-history":[{"count":0,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/1374\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/media?parent=1374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/categories?post=1374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/tags?post=1374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}