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Where can I find documentation on creating a custom session manager for Tomcat?
For example:
How do I configure my session manager in tomcats server.xml?
What interface must be implemented to use my session manager?
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In session management, Tomcat creates a session id whenever client's first request gets to the server (However, other servlet containers may behave differently). Then it inserts this session id into a cookie with a name JSESSIONID and sends along with the response.
The server. xml file is Tomcat's main configuration file, and is responsible for specifying Tomcat's initial configuration on startup as well as defining the way and order in which Tomcat boots and builds.
jvmRoute. A routing identifier for this Tomcat instance. It will be added to the session id to allow for stateless stickyness routing by load balancers. The details on how the jvmRoute will be included in the id are implementation dependent.
Tomcat's sessions are stored according to chosen session manager. If we pick the standard manager (StandardManager class saw previously), all session data will be saved into Java heap. The storing of session data in JVM memory is a dangerous idea.
Q: How do I configure my session manager in tomcats server.xml ?
A: <Manager... goes inside <Context.... From Tomcat docs:
A Manager element MAY be nested inside a Context component. If it is not included, a default Manager configuration will be created automatically, which is sufficient for most requirements, — see Standard Manager Implementation below for the details of this configuration.
Q: What interface must be implemented to use my session manager ?
A: org.apache.catalina.Manager
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