Configure Redis leader follower(master-slave) replication Permalink to "Configure Redis leader follower(master-slave) replication"
Tip submitted by @zhx828
In the latest JHipster generator, it provides a redis cluster setting for production deployment. But oftentimes, that might be overkill for small projects. This document provides a solution to configure Redis leader follower (master-slave) replication. For more information about Redis Replication, please see here.
The following changes are based on my own project set up. I assume you have modified your application properties to setup Redis password, so you can adjust your own accordingly.
Step 1 Permalink to "Step 1"
Add file RedisProperties.java
:
public class RedisProperties {
String type;
String password;
MasterSlaveRedisCache masterSlaveCache;
SingleRedisCache singleCache;
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public MasterSlaveRedisCache getMasterSlaveCache() {
return masterSlaveCache;
}
public void setMasterSlaveCache(MasterSlaveRedisCache masterSlaveCache) {
this.masterSlaveCache = masterSlaveCache;
}
public SingleRedisCache getSingleCache() {
return singleCache;
}
public void setSingleCache(SingleRedisCache singleCache) {
this.singleCache = singleCache;
}
}
Step 2 Permalink to "Step 2"
Add RedisProperties to ApplicationProperties.java
public class ApplicationProperties {
...
private RedisProperties redis;
public RedisProperties getRedis() {
return redis;
}
public void setRedis(RedisProperties redis) {
this.redis = redis;
}
...
}
Step 3 Permalink to "Step 3"
Update the file CacheConfiguration.java
, method jcacheConfiguration
. These changes have to be combined with the current cluster setup.
if (applicationProperties.getRedis().getType().equals(RedisType.SINGLE.getType())) {
config.useSingleServer()
.setAddress(applicationProperties.getRedis().getSingleCache().getAddress())
.setPassword(applicationProperties.getRedis().getPassword());
} else if (applicationProperties.getRedis().getType().equals(RedisType.MASTER_SLAVE.getType())) {
config.useMasterSlaveServers()
.setMasterAddress(applicationProperties.getRedis().getMasterSlaveCache().getMasterAddress())
.addSlaveAddress(applicationProperties.getRedis().getMasterSlaveCache().getSlaveAddress())
.setPassword(applicationProperties.getRedis().getPassword());
} else {
throw new Exception("The redis type " + applicationProperties.getRedis().getType() + " is not supported. Only single and master-slave are supported.");
}
Step 4 Permalink to "Step 4"
Update application-dev.yml
to use single server
application:
profile: dev
redis:
type: 'single'
password: 'public-redis-password'
single-cache:
address: 'redis://localhost:6379'
Step 5 Permalink to "Step 5"
Update application-prod.yml
to use master-slave servers
application:
profile: prod
redis:
type: 'master-slave'
password: 'public-redis-password'
master-slave-cache:
master-address: 'redis://redis-master:6379'
slave-address: 'redis://redis-slave:6379'