Faster Postgres migrations using PeerDB, Part 1

PeerDB is an ETL/ELT tool designed for PostgreSQL, allowing users to stream query results from a source database to a target one. This makes it efficient for data migration between Postgres databases. The benefits of using PeerDB include faster large table migrations, the ability to transform data during migration, simultaneous reading and writing, and fault-tolerance. A tutorial is provided to test PeerDB for Postgres migrations in five steps: setting up PeerDB, generating sample data on source, schema-only dump and restore on target, creating source and target Postgres peers, and migrating data using the CREATE MIRROR command.