Support Redis static master-replica auto-configuration

[facewise]

Hi.

I'd like to suggest support for Redis static Master/Replica auto-configuration.
This auto-configuration makes LettuceConnectionFactory use RedisStaticMasterReplicaConfiguration, e.g. AWS ElastiCache with Replicas.
I know it's cautious since Jedis doesn't support for static master-replica connection in Jedis, while Lettuce does.

Please feel free to review this suggestion and share your thoughts.

[wilkinsona]

Thanks for the PR.

Given that the static master-replica support is specific to Lettuce, I am not sure that the proposed additions should be as central to the auto-configuration as they currently are. For example, the properties could be nested beneath spring.data.redis.lettuce to indicate that they're only supported with Lettuce.

It also doesn't feel quite right for RedisConnectionDetails to know about a Lettuce-specific feature. I'm not sure how to address this as I don't think we've faced this problem and I don't think we have an established pattern for dealing with it.

[facewise]

I agree. Would it still be consideration if the properties go beneath spring.data.redis.lettuce and make RedisConnectionDetails unaware of this change?