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Replicator

Replicator is a logical-replication toolkit that supports use-cases involving the following products:

• CockroachDB: Source / Target
• PostgreSQL: Source / Target
• MySQL / MariaDB: Source / Target
• Oracle Database: Target

Use-cases:

• Live migrations to CockroachDB.
• Backfill existing database from CockroachDB to preserve a migration fallback option.
• Logical replication to reporting / analytics databases.
• Replication strategies not otherwise supported by CockroachDB (e.g. Hot/Cold, 2DC, DHT Rings).
• Data recovery using changefeed events stored in a Kafka broker or in S3 bucket.

Notable features:

• Embedded TypeScript / JavaScript environment for configuration and on-the-fly data transforms.
• Common patterns in logical replication can be configured with data behaviors.
• Support for transactionally-consistent replication (including foreign keys) or a free-running, immediate, mode for high-throughput applications.
• Merge operators can resolve row-level data conflicts.