TiCDC Resolved Delay Alert

Note:
This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: TiCDC resolved delay 告警

| username: TiDBer_yyy

[TiDB Usage Environment] Production Environment
[TiDB Version] 5.0.4
[Encountered Problem: Phenomenon and Impact]
Query alarm rules: Many synchronization tasks have a very large resolve ts.


Check the current synchronization task checkpoint for the current time:

Question:
Why is there such a large time difference, causing many alarms?

| username: tidb狂热爱好者 | Original post link

Too many tasks are overwhelming.

| username: TiDBer_yyy | Original post link

Look at the synchronized checkpoint and see if it matches the current time.
How can you tell that the backlog is significant?

| username: Lucien-卢西恩 | Original post link

You can check the monitoring status of TiCDC to see which part of the task stage the delay is mainly in.