Introduction Webhooks look easy until your system processes the same payment three times, drops a critical event, and you can’t prove what actually happened. T...
Introduction — A Production Incident EyecareWellhttps://eyecarewell.com operates a Shopify‑backed ecommerce platform alongside a Windows blue‑light filter appl...
Building APIs That Don’t Rot: Lessons from Shipping Production Systems in C API Design: Pragmatism Over Purity REST is great on paper, but most real APIs end up...
If this has happened to you… - Two requests update the same thing at the same time race conditions - Retries create duplicate effects double emails, double cha...
In distributed systems, the assumption that every request reaches its destination and that every response returns to the sender is not always true. When a trans...
The Core Mental Model Four pillars: 1. Transaction statuses 2. Callbacks / Webhooks 3. Reconciliation & Status Enquiry 4. Retries, reversals & idempotency If y...
In data engineering, failures are the norm: jobs crash, networks timeout, Airflow retries tasks, Kafka replays messages, and backfills rerun months of data. In...
