redisson/redisson-tomcat

Redis based Tomcat Session Manager

Stores session of Apache Tomcat in Redis and allows to distribute requests across a cluster of Tomcat servers. Implements non-sticky session management backed by Redis.

Supports Apache Tomcat 6.x, 7.x, 8.x, 9.x

Advantages

Current implementation differs from any other Redis based Tomcat Session Manager in terms of efficient storage and optimized writes. Each session attribute is written into Redis during each HttpSession.setAttribute invocation. While other solutions serialize whole session each time.

Usage

1 Add RedissonSessionManager into context.xml

<Manager className="org.redisson.tomcat.RedissonSessionManager"
          configPath="${catalina.base}/redisson.conf" readMode="MEMORY" updateMode="DEFAULT"/>

readMode - read attributes mode. Two modes are available:

• MEMORY - read attributes stored in local Tomcat Session. Default mode.
• REDIS - read directly from Redis.

updateMode - attributes update mode. Two modes are available:

• DEFAULT - session attributes are stored into Redis only through setAttribute method. Default mode.
• AFTER_REQUEST - all session attributes are stored into Redis after each request.

configPath - path to Redisson JSON or YAML config. See configuration wiki page for more details.

2 Copy two jars into TOMCAT_BASE/lib directory:

1. For JDK 1.8+
   redisson-all-3.7.0.jar

   for Tomcat 6.x
   redisson-tomcat-6-3.7.0.jar
   for Tomcat 7.x
   redisson-tomcat-7-3.7.0.jar
   for Tomcat 8.x
   redisson-tomcat-8-3.7.0.jar
   for Tomcat 9.x
   redisson-tomcat-9-3.7.0.jar

2. For JDK 1.6+
   redisson-all-2.12.0.jar

   for Tomcat 6.x
   redisson-tomcat-6-2.12.0.jar
   for Tomcat 7.x
   redisson-tomcat-7-2.12.0.jar
   for Tomcat 8.x
   redisson-tomcat-8-2.12.0.jar