This allows the server to be restarted without losing existing Sessions. It is not meant to be used as a general long-term session persistence mechanism. Customizing Session Tracking Session tracking interfaces are in the javax.servlet.http package. Properties You can customize properties in the Session Tracker. Parameter Description Default session.invalidationinterval Time interval when Java Web Server checks for sessions that have gone unused long enough to be invalidated.
Value is an integer, specifying the interval in milliseconds.
Value is an integer, specifying the interval in milliseconds. If true , sessions are swapped to disk when Java Web Server shuts down and are revalidated from disk when it restarts. If false , Java Web Server removes session swap files every time it starts. No other data should be kept in this directory. 1024 session.invalidationtime Amount of time a session is allowed to go unused before it is invalidated.