HTTP Session Replication: Difference between revisions
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=Internal= | =Internal= | ||
* [[Servlet_Session_Tracking_API#Session_Replication|Servlet Session Tracking API]] | |||
* [[Web.xml#.3Cdistributable.3E|web.xml]] | |||
* [[HTTP Session#Subjects|HTTP Session]] | * [[HTTP Session#Subjects|HTTP Session]] | ||
=Overview= | =Overview= | ||
Revision as of 16:12, 14 June 2016
Internal
Overview
The web application will be clustered if its web.xml contains the <distributable> tag:
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<distributable/>
<!-- ... -->
</web-app>
From a server's perspective, <distributable> tells it to use a clustered session manager, which replicates (or distributes) sessions across the cluster, so all EAP nodes can have access to it. This way if a node fails, requests can be directed to other node, which still has access to the session state.
The sever also must to be configured to support HTTP session clustering, see WildFly Server Configuration below.