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What is PolarDB-X CDC ?

PolarDB-X CDC is a core component of PolarDB-X which is responsible for global binary log generation, publication and subscription.

With PolarDB-X CDC, PolarDB-X database can provide binary log fully compatible with MySQL binary log, which can be consumed seamlessly by MySQL binary log tools. And it can play the role of MySQL slave through MySQL Replication protocol.

The core features of PolarDB-X CDC include the following:

• Global Binlog: Merges the original Binlog generated by all PolarDB-X DN nodes into a single global queue, providing a logical Binlog stream that ensures transaction integrity and orderliness, and can provide stronger data consistency guarantees.

• Binlog-X: Generates multiple logical Binlog streams in real-time to solve the bottleneck problem of Global Binlog in large-scale clusters, and provides stronger distributed scalability capabilities.

• Replica: Compatible with the MySQL Replication protocol, providing the ability to serve as a MySQL or PolarDB-X standby database.

Quick Start

The PolarDB-X CDC is a builtin component of the PolarDB-X.

Try PolarDB-X CDC by following these steps:

1. Start a PolarDB-X

See CDC Node Creation Guide to create a PolarDB-X instance with CDC nodes.

2. Try MySQL Binary Log Commands

PolarDB-X is fully compatible with MySQL binary log related commands, such as SHOW BINARY LOGS, SHOW BINLOG EVENTS, etc. All commands can be found in the PolarDB-X Binlog Commands Introduction.

3. PolarDB-X as MySQL Slave

PolarDB-X supports MySQL Replica related commands, such as CHANGE MASTER TO，START/STOP/RESET SLAVE，SHOW SLAVE STATUS, etc. you can use PolarDB-X as MySQL slave, refer to Replica Reference Manual for command details.

See more docs about PolarDB-X.

License

PolarDB-X CDC is under Apache License 2.0, see the license for details.

Contributing

See how to contribute.