Final Recommendations
- Start Small: Begin with your most critical endpoints (payments, orders)
- Monitor: Track duplicate request rates to understand retry patterns
- Document: Make it clear in your API docs that clients should use idempotency keys
- Test: Simulate network failures and verify idempotency works correctly
- Educate: Ensure your team understands why and how to use idempotency
Idempotency isn't just a nice-to-have feature—it's essential for building reliable distributed systems. The small upfront investment in implementing it properly will save you countless hours of debugging and customer support down the line.