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tests leader election with redis, zookeeper
Dec 31, 2019
38216ae · Dec 31, 2019

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springboot-leader-election-demo

README.md

Leader election with redis, zookeeper, raft

; this is a demo project for leader election between clusters (i.e spring boot server)
by using redis, zookeeper, raft

Getting started

Running with zookeeper

// start server1
$ ./gradlew bootRun \
    -PjvmArgs="-Dserver.port=8080 -Dcluster.id=server1 \
    -Dcluster.leadership.type=zookeeper \
    -Dcluster.leadership.zookeeper.connectString=192.168.79.130:2181"

$ ./gradlew bootRun \
    -PjvmArgs="-Dserver.port=8081 -Dcluster.id=server2 \
    -Dcluster.leadership.type=zookeeper \
    -Dcluster.leadership.zookeeper.connectString=192.168.79.130:2181"

Running with redis

// start server1
$ ./gradlew bootRun \
    -PjvmArgs="-Dserver.port=8080 -Dcluster.id=server1 \
    -Dcluster.leadership.type=redis \
    -Dcluster.leadership.redis.address=redis://192.168.79.130:6379"

$ _./gradlew bootRun \
    -PjvmArgs="-Dserver.port=8081 -Dcluster.id=server2 \
    -Dcluster.leadership.type=redis \
    -Dcluster.leadership.redis.address=redis://192.168.79.130:6379"_

Result

If u run two server, then server1 take a leader ship

... demo.config.LeaderElectionConfiguration  : ## onTaskLeadership from server1

After terminate server1, then server2 will take a leadership

... demo.config.LeaderElectionConfiguration  : ## onTaskLeadership from server2