RESP compatibility with Redis Enterprise

[Rakeshya-Kore]

Hi Team,

As per the documentation (https://redis.io/docs/latest/operate/rs/references/compatibility/resp/#deactivate-resp3), it is stated that "You cannot use sharded pub/sub if you deactivate RESP3 support." This suggests that if RESP3 is deactivated (i.e., the server is using RESP2), sharded Pub/Sub won't work because the protocol lacks the necessary features to support it. Could you please confirm if this understanding is correct and provide further clarification?

Additionally, does Redis sharded Pub/Sub really require the client library to support RESP3, or will it work with RESP2?

Requesting Someone to share insights ASAP.

[rrelledge]

@yoavredis Can you help answer these questions about this sharded pub/sub limitation we documented?

[yoavredis]

@Rakeshya-Kore thank you for sharing. The Redis Enterprise Software documentation is indeed misleading and we will fix it ASAP.
When RESP3 is enabled for a database, the client can use sharded pub/sub with either RESP2 or RESP3.
(Full answer was given here: redis/ioredis#1934)

@rrelledge:
Please replace "You cannot use sharded pub/sub if you deactivate RESP3 support." with:

"You cannot use sharded pub/sub if you deactivate RESP3 support.
When RESP3 is enabled, sharded pub/sub can be used with either RESP2 or RESP3."