Databases
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    <p>You can configure your container to persist session to database using JDBC. If you use tomcat you can configure JDBC session persistence provider. I assume you can do similar thing on other containers too.</p> <p>I've documented the steps on setting up tomcat JDBC session persistence on my blog: <a href="http://gerrydevstory.com/2013/08/21/tomcat-7-jdbc-session-persistence/">http://gerrydevstory.com/2013/08/21/tomcat-7-jdbc-session-persistence/</a></p> <p>In summary you need a configuration like this on your context.xml:</p> <pre><code>&lt;Manager className="org.apache.catalina.session.PersistentManager" maxIdleBackup="10"&gt; &lt;Store className="org.apache.catalina.session.JDBCStore" connectionURL="jdbc:mysql://localhost/mytomcat?user=root" driverName="com.mysql.jdbc.Driver" sessionAppCol="app_name" sessionDataCol="session_data" sessionIdCol="session_id" sessionLastAccessedCol="last_access" sessionMaxInactiveCol="max_inactive" sessionTable="tomcat_sessions" sessionValidCol="valid_session" /&gt; &lt;/Manager&gt; </code></pre> <p>However, <code>maxIdleBackup="10"</code> above indicates session will be flushed into jdbc only after 10 seconds of inactivity. I don't know if setting it to 0 will work.</p> <p>I imagine getting whole thing to work will be hard without sticky load balancer session, eg: how do you ensure session updates are flushed before the next request? You can't guarantee the next request will be served by the same node.</p> <p>Maybe another alternative is if you can hack your self / there's another session provider library out there that writes straight into database.</p> <p><em>Edit 21 May 2014:</em></p> <p>I just figured out <a href="http://gerrydevstory.com/2014/05/15/java-web-session-clustering-with-hazelcast/">hazelcast WM is a great library to do peer-to-peer session replication</a>. All you need to do is include hazelcast jars to the classpath, setup hazelcast-wm as filter on your web.xml and configure hazelcast. It will automatically replicate session objects accross clusters.</p>
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    1. POHow can I make Spring Security store the HTTP Session in a database to use the web app on multiple servers?
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    1. COthanks, sounds like a good option for me too. I am wondering how well this will work with the spring security's session? do i need to do other setting to work with the existing session?? I will try that out!
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    2. COI don't think you need other settings. Everything works through HttpSession interface.
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