TiDB developer here, TiDB Binlog is the offical CDC tool for TiDB, it used to be a part of TiDB Enterprise Edition.
The TiDB Binlog component is used to collect the transaction log of TiDB and synchronize it to the downstream in real time, such as TiDB/MySQL/Kafka. This component is similar in function to MySQL's master-slave replication. It collects the binlogs generated by each TiDB instance and sorts them by the time of transaction commit, and globally and orderly synchronizes the data downstream. With TiDB Binlog, data can be synchronized to other databases in real time, as well as TiDB incremental backup and recovery. As one of the core components of TiDB, TiDB Binlog has been running stable for a long time in the production environment of hundreds of users.
We are very happy to be able to open source this and help more users.