I've been working on something similar for cluster support, though I did not plan to provide it in the API. Are you interested in connection pooling for thread safety?

Everything is pipelined in cpp-redis, so it is relatively thread safe. You must, however, be careful with the capture context in the callback parameters. I would recommend instantiating multiple clients if you run into any issues with deadlocking delays.

Thanks for your effort, I am using acl redis for now. connection pool is using for reuse the connection to redis server