How to get the lag size of a consumer group in redis stream?

user_1061155 0
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Suppose I have stream mystream, and a group mygroup, how do I get the length of unconsumed messages?

redis
1 Answers

No, there is no way to do that afaik.

It is possible to get the last message ID delivered in a group and in a stream with the XINFO GROUPS and XINFO STREAM commands, respectively.

However, there is no command that returns the length of a stream subrange. Such command, was it to exist, would probably require linear time complexity and in that case, it will probably not be implemented.

user_31604750
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