Replica load balance/randomize get_cmd

[Vincent Yau]

Hello,

redis version: 5.0.6 (Cluster mode)

lettuce-core:5.2.1.RELEASE

1 master and 3 replicas

6 client hosts

Majority of our get_cmd traffic goes to one of the replicas, and it has been like this for the pass 7 days. Need some help here on how to get the load to distribute more evenly. Thanks.

Code to setup the lettuce client: 

ClusterTopologyRefreshOptions topologyRefreshOptions = ClusterTopologyRefreshOptions.builder()
     .enablePeriodicRefresh(60mins)
     .enableAllAdaptiveRefreshTriggers()
      .build();

ClusterClientOptions clientOptions = ClusterClientOptions.builder()
    .topologyRefreshOptions(topologyRefreshOptions)
    .build();

RedisClusterClient redisClusterClient = RedisClusterClient.create(uri);
redisClusterClient.setOptions(clientOptions);
redisClusterClient.setDefaultTimeout(timeout);

StatefulRedisClusterConnection<byte[], byte[]> connect = redisClusterClient.connect(new ByteArrayCodec());
connect.setReadFrom(ReadFrom.REPLICA);

[Vincent Yau]

Problem resolved by setting isOrderSensitive in ReadFrom to true.