Why Idempotency in APIs Is Critical for Reliable Systems
If you’ve ever built an API that touches money, inventory, emails, or basically anything “real,” you’ve already met the villain of this story: Retries. Retries happen everywhere—mobile networks, flaky Wi‑Fi, load balancers, gateway timeouts, client SDKs, message queues, cron jobs. And retries are the reason your “simple” endpoint can accidentally: Idempotency is the concept that … Read more