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XACKis sent to the server.
XREADGROUPto return with timeout when no messages arrive within Seconds. On a timeout, xidle_group/5 is called which will try to handle messages to other consumers pending longer than Seconds. Choosing the time depends on the application. Notably:
max_deliveries(Count)is exceeded. Note that the original receiver does not notice that the job is claimed and thus multiple consumers may ultimately answer the message.
XCLAIM) a message max Count times. Exceeding this calls xhook/2. Default Count is