Redis and TCP Load Balancers

[Kevin Johnson]

Hello,

When read-only Redis replicas become unavailable when synchronizing with the master (for instance during a failover event), how can they be configured to send the correct response to a TCP load balancer such that the LB does not route requests to them until they become available/healthy again?

Thanks!

-Kevin

[Jan-Erik Rediger]

Redis itself won't actively send out anything, unless requested.
Your LB would have to periodically PING the instance and interpret the
response.

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[Kevin Johnson]

Thanks.  If my LB can't mitigate the problem do you know of any possible Redis client (Redisson, Jedis, etc.) configurations that can at least mark a given Redis pool connection as unusable/not available?