What causes silent failures in production APIs?

Aggressive caching by gateways or CDNs on POST requests, serving stored 200 OKs without hitting your app — especially with static idempotency keys.

How do you stop API gateways from caching webhooks?

Add Cache-Control: no-store header and use unique idempotency keys per event to make requests uncacheable.

Will edge computing make API caching issues worse?

Absolutely — distributed caches like Cloudflare Workers amplify silent failures across globals; audit headers religiously.

⚙️ DevOps & Platform Eng

Caching Turned My API Integration into a Silent Failure Machine – And the Gruesome Fix

Picture this: your app's humming in staging, but production starts eating events alive. Silent caching strikes again, serving ghost 200s while your business bleeds.

DevTools Feed Apr 03, 2026 3 min read 22 views

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Debug console showing cached 200 OK masking missing API job enqueue

⚡ Key Takeaways

Production caching on POSTs creates fake 200 OKs, starving your business logic. 𝕏
Fix with Cache-Control: no-store and per-event unique idempotency keys. 𝕏
Audit entire pipeline; edge computing will make this epidemic. 𝕏

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#API caching #idempotency keys #production-debugging #webhook failures

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