During a migration effort, I had to re-execute failed steps safely — again and again. That’s when idempotency became a first-class citizen.
Concepts:
- Idempotency ensures operations can be retried without unintended effects
- It often requires designing stateless actions or storing operation logs
-
PUT and DELETE in REST are idempotent by convention — but custom logic must also respect thisTips:
- Use external request IDs for tracing
- Maintain an idempotency key per transactional unit
- Audit logs help verify safe replays
Building resilient migrations = building with retry in mind.