8 Practical API Idempotency Solutions to Eliminate Duplicate Requests (Pitfall Guide)
The article explains the causes of duplicate requests in distributed systems, defines idempotency, and presents eight concrete implementation strategies—including token mechanisms, unique database indexes, optimistic and pessimistic locks, distributed locks, state machines, request serial numbers, and MQ‑based handling—each with code samples, advantages, drawbacks, and usage guidelines.
