emqx/changes/ce/fix-12158.en.md

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Fix the issue that the rule engine cannot connect to `upstash` Redis.
Before the fix, after establishing a TCP connection with the Redis service, the Redis driver of EMQX used [Inline Commands](https://redis.io/docs/reference/protocol-spec/#inline-commands) to send AUTH and SELECT commands. However, the `upstash` Redis service does not support Inline Commands, which causes the rule engine to fail to connect to the `upstash` Redis service.
After the fix, the Redis driver of EMQX uses RESP (REdis Serialization Protocol) to send AUTH and SELECT commands.