High Latency in Ticdc Master-Slave Replication

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

Original topic: Ticdc主从复制延迟很高

| username: TiDBer_嘎嘣脆

[TiDB Usage Environment] Production Environment
[TiDB Version] 6.2.0
[Encountered Problem: Phenomenon and Impact]


Observed a delay of up to 8 hours, checked the CDC logs

[Resource Configuration]
[Attachments: Screenshots/Logs/Monitoring]

| username: Holland | Original post link

Is this UTC time? Try inserting a piece of data upstream yourself and see if it gets synchronized downstream immediately.

| username: MrSylar | Original post link

What is the deployment topology, from tidb to where?

| username: TiDBer_嘎嘣脆 | Original post link

At that time, after the task was started, operations like inserting data were all synchronous.

| username: Holland | Original post link

How about checking the changefeed monitoring panel in Grafana?

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

This should be the UTC time difference.

| username: TiDBer_嘎嘣脆 | Original post link

| username: Vinson | Original post link

It looks like there is an 8-hour time difference with the UTC time zone.

| username: tidb菜鸟一只 | Original post link

Check the load on the downstream database.

| username: system | Original post link

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