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Database Replication Patterns

Database Replication Patterns

Database Replication Patterns

Database Replication Patterns

Database Replication Patterns

Database Replication Patterns

Database Replication Patterns

Database Replication Patterns

Replication Fundamentals

Database replication copies data from one server to another for redundancy, read scaling, and disaster recovery.

Synchronous Replication

The primary waits for replicas to acknowledge writes:

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\-- PostgreSQL synchronous replication

synchronous_commit = on

synchronous_standby_names = '2 (standby1, standby2, standby3)'

SELECT application_name, state, sync_state, sync_priority

FROM pg_stat_replication;

Synchronous replication guarantees no data loss but increases latency.

Asynchronous Replication

The primary does not wait for replicas:

def…