Guides ยท Technology
Database Replication Basics
Keep standby copies in sync
Database replication streams changes from a primary to replicas to improve availability and read scaling; it requires choosing sync/async modes, monitoring lag, and planning failover procedures.
- replication
- primary
- replica
- lag
- failover
Choose Mode
Sync for stronger consistency, async for lower latency and better throughput.
Monitor
Track replication lag and health; alert on delays.
Failover Plan
Test promotion/runbook; prevent split brain and stale reads where it matters.
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