Redis stream XReadGroup not reading new messages even if `BLOCK` parameter is 0

Question

I am using redis stream and XReadGroup for reading messages from stream. I have set block parameter as 0. currently my code look like this

data, err := w.rdb.XReadGroup(ctx, &redis.XReadGroupArgs{
            Group:    w.opts.group,
            Consumer: w.opts.consumer,
            Streams:  []string{w.opts.streamName, ">"},
            Count: 1,
            Block: 0,
        }).Result()

I am currently facing a problem that if I keep the application (involving this code) idle for 10-12 hours, XReadGroup is not able to read new messages, if I restart the application then all the new messages consumed at once. Is there any solution for this problem?

score 0 · Answer 1 · answered Sep 21 '22 at 07:10

0

You can have a block time of let's say 10s, it does not change anything (I guess the code you provided is in a while(true)).

From my experience you can keep the app idle for days and it still works.

I don't really know why but I guess it has to do with the "constant" back and forth "reseting" the connection.

answered Sep 21 '22 at 07:10

JeanJacquesGourdin

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Its fixed now. The problem was that whenever there was err from XReadGroup due to connection break the while(true) loop was breaking. I avoided that. Also I added block time of 1 minute. – Sanketh Kini Oct 19 '22 at 06:54
can you give more info on the xreadgroup parameters you pass ? – Jefry90 May 18 '23 at 06:54
@Jefry90 I guess you can find what you want here : https://redis.io/commands/xreadgroup/ – JeanJacquesGourdin May 18 '23 at 09:59
thank you , fixed in with adding BLOCK param to the xreadgroup – Jefry90 May 23 '23 at 12:14

Redis stream XReadGroup not reading new messages even if `BLOCK` parameter is 0

1 Answers1