Store your Tomcat sessions in your Redis Cluster

This project provides an Apache Tomcat Manager able to save and restore sessions into a Redis cluster, using the Jedis or Lettuce client. This manager implements the serialization for authType and Principal, that can be usefull when a BASIC_AUTH is enabled.

Requirements:

• JDK (8, 9, 11), Maven
• an Apache Tomcat
• a Redis cluster

Supports:

• Apache Tomcat 7

• Apache Tomcat 8

• Apache Tomcat 9

• Redis cluster 3.2

• Redis cluster 5.0

How do I use it?

1°/ Clone this project

    git clone https://github.com/xavierfacq/tomcat-session-redis-cluster.git

2°/ Build with maven

    mvn clean install

3°/ Install the session manager into your Apache Tomcat

You can choose the implementation driver you prefer by setting the value of the properties "implementation". Possible values are: jedis, lettuce

3.1 With Jedis

Get more informations about Lettuce:

• https://github.com/xetorthio/jedis

3.1.1 Install requested Jar files

    cp tomcat-session-redis-cluster.jar $catalina_home/lib/
    cp jedis-2.9.0.jar $catalina_home/lib/
    cp commons-pool2-2.4.2.jar $catalina_home/lib/

3.1.2 Add the following snippet into your {catalina_home}/conf/context.xml

    <Manager className="org.apache.tomcat.session.redis.RedisClusterSessionManager" 
        nodes="172.16.50.12:7000,172.16.50.12:7001,172.16.50.12:7002" implementation="jedis" /> 

3.1 With Lettuce

Get more informations about Lettuce:

• https://lettuce.io/
• https://github.com/lettuce-io

3.1.1 Install requested Jar files

    cp tomcat-session-redis-cluster.jar $catalina_home/lib/
    cp lettuce-core-5.2.1.RELEASE.jar $catalina_home/lib/
    cp netty-*.jar $catalina_home/lib/
    cp reactive-streams-1.0.2.jar $catalina_home/lib/
    cp reactor-core-3.2.11.RELEASE.jar $catalina_home/lib/

3.1.2 Add the following snippet into your {catalina_home}/conf/context.xml

    <Manager className="org.apache.tomcat.session.redis.RedisClusterSessionManager" 
        nodes="172.16.50.12:7000,172.16.50.12:7001,172.16.50.12:7002" implementation="lettuce" /> 

4°/ Restart your Apache Tomcat

Enjoy!