Consumption data is exceptional.
You can view the traffic monitoring data on the monitoring page in the CKafka console to check whether there is a surge, and if so, upgrade the instance specification for solution.
Check whether the limit of consumer groups has been reached.
If rebalancing occurs frequently for network reasons, we recommend you adjust the client timeout period.
Check whether expired offsets are pulled. Messages will be deleted after expiration, and if they are pulled with expired offsets, the pull will fail.