Opening Scenario
Your backend uses PostgreSQL. Today you run it on an EC2 instance — you manage snapshots, handle OS patching, monitor disk space, configure replication, and debug slow query logs manually. It works, but a junior engineer deleted the WAL archive last month and your DBA is the only one who knows how to failover. You want a relational database without running it yourself. What does AWS offer?
Question Progression
Concept 1: What does RDS actually manage for you?
Question If you move from self-managed Postgres on EC2 to RDS, what operational work disappears and what remains your responsibility?
Reasoning "Managed database" is an umbrella term. Understanding where the handoff happens determines whether RDS actually solves your pain.
Answer RDS handles:
- Automated backups — daily snapshots plus continuous transaction log backups; point-in-time recovery to any second within your retention window (up to 35 days)
- OS and engine patching — AWS applies security…
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In the full tutorial
- When to Reach for RDS
- Interview Follow-Ups