We use cluster mode, but always have a cache hit rate of 50%. Do you know why?

[huaism]

[huaism]

Even if we visit the same KEY multiple times, this result is

[4fath]

@huaism how did you get that fancy output?

[huaism]

@4fath
link : https://github.com/junegunn/redis-stat

[NitinK91]

Hi @huaism , can you please provide the config to implement redis cache using redis-cluster.

[huaism]

HI @NitinK91

hibernate redis

hibernate.cache.region.factory_class=org.hibernate.cache.redis.hibernate52.SingletonRedisRegionFactory
hibernate.cache.region_prefix=hibernate
hibernate.cache.use_structured_entries=true
hibernate.cache.use_query_cache=false
hibernate.cache.use_second_level_cache=true
hibernate.cache.provider_configuration_file_resource_path=hibernate-redis.properties

hibernate-redis.properties

redisson-config=classpath:redisson.yaml
redis.expiryInSeconds.default=0

redisson.yaml

clusterServersConfig:
idleConnectionTimeout: 10000
pingTimeout: 1000
connectTimeout: 10000
timeout: 3000
retryAttempts: 3
retryInterval: 1500
reconnectionTimeout: 3000
failedAttempts: 3
password: null
subscriptionsPerConnection: 5
clientName: null
loadBalancer: !<org.redisson.connection.balancer.RoundRobinLoadBalancer> {}
slaveSubscriptionConnectionMinimumIdleSize: 1
slaveSubscriptionConnectionPoolSize: 50
slaveConnectionMinimumIdleSize: 10
slaveConnectionPoolSize: 64
masterConnectionMinimumIdleSize: 10
masterConnectionPoolSize: 64
readMode: "MASTER_SLAVE"
nodeAddresses:

• "redis://192.168.199.42:6300"
• "redis://192.168.199.42:6301"
• "redis://192.168.199.42:6302"
• "redis://192.168.199.42:6303"
• "redis://192.168.199.42:6304"
• "redis://192.168.199.42:6305"
  scanInterval: 10000
  threads: 0
  nettyThreads: 0
  codec: !<org.redisson.codec.FstCodec> {}
  useLinuxNativeEpoll: false

[NitinK91]

Thanks @huaism for sharing.

I am facing an issue. Can you help.
It is giving following error::

java.lang.IllegalArgumentException: port out of range:-1
at java.net.InetSocketAddress.checkPort(InetSocketAddress.java:143)
at java.net.InetSocketAddress.(InetSocketAddress.java:224)
at org.redisson.client.RedisClient.(RedisClient.java:93)
at org.redisson.connection.MasterSlaveConnectionManager.createClient(MasterSlaveConnectionManager.java:310)
at org.redisson.cluster.ClusterConnectionManager.connect(ClusterConnectionManager.java:150)
at org.redisson.cluster.ClusterConnectionManager.(ClusterConnectionManager.java:81)
at org.redisson.config.ConfigSupport.createConnectionManager(ConfigSupport.java:172)
at org.redisson.Redisson.(Redisson.java:103)
at org.redisson.Redisson.create(Redisson.java:133)

Actually it not generating ClientPartition.getMasterAddress() properly.
Address is //127.0.0.1:8001@18001 as recorded by CLUSTER_NODES, but it reads it as host: 18001 and port=-1.

Cluster config deom CLUSTER_NODES::
[ClusterNodeInfo [nodeId=4317f285b359ddc3ac08bb85239924509146e475, address=//127.0.0.1:8003@18003, flags=[SLAVE], slaveOf=4118a348827e6107d7e35522a251fd39c5a8f82b, slotRanges=[]], ClusterNodeInfo [nodeId=2f7b93c80d3721b3fb26fe87bc28ed04a63fe0ec, address=//127.0.0.1:8005@18005, flags=[SLAVE], slaveOf=8b81c3e1acb4e1959a83267540058d1a6bffa12f, slotRanges=[]], ClusterNodeInfo [nodeId=4118a348827e6107d7e35522a251fd39c5a8f82b, address=//127.0.0.1:8001@18001, flags=[MASTER], slaveOf=null, slotRanges=[[5461-10922]]], ClusterNodeInfo [nodeId=a0770863d893a5b8106a83e247cea2544f99ef36, address=//127.0.0.1:8004@18004, flags=[SLAVE], slaveOf=6b9da1bbe38b978a3017406e5c1e310f4706cfc8, slotRanges=[]], ClusterNodeInfo [nodeId=8b81c3e1acb4e1959a83267540058d1a6bffa12f, address=//127.0.0.1:8000@18000, flags=[MYSELF, MASTER], slaveOf=null, slotRanges=[[0-5460]]], ClusterNodeInfo [nodeId=6b9da1bbe38b978a3017406e5c1e310f4706cfc8, address=//127.0.0.1:8002@18002, flags=[MASTER], slaveOf=null, slotRanges=[[10923-16383]]]]

My code is ::
Config config = new Config();
config.useClusterServers()
.addNodeAddress("redis://127.0.0.1:8000");
RedissonClient redisson = Redisson.create(config);

    RMap<String, String> map = redisson.getMap("simpleMap");
    map.put("mapKey", "This is a map value");
    String mapValue = map.get("mapKey");
    System.out.println("stored map value: " + mapValue);
    redisson.shutdown();