Your Herd of Elephants: PostgreSQL Replication

PostgreSQL has added in-core logical replication, and now the field of replication options in PostgreSQL has gotten wide: Streaming replication, warm standby, logical replication… We'll discuss what the options are, their limitations and pitfalls, and what the best use-case for each one is. We'll show what it takes to set each one up, monitor it, and get it working again on failures.

We'll cover:

• The history of replication in PostgreSQL.
• WAL shipping
• Streaming replication
• Trigger-based replication
• Logical decoding
• And some exotic animals.