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Integration Reliability
Integration reliability for payment and event-driven systems: idempotency, replay, out-of-order delivery and review queues, reproduced in a local lab instead of discovered in production.
2 posts
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5 min read
The payment webhook failure I had to inject on purpose
Most webhook tests skip partial database failure. I injected one on purpose in a payment webhook lab and show how a correlation key and review queue recover.
- Integration Reliability
- Security Engineering
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4 min read
A Valid Payment Webhook Can Still Be Dangerous to Process Twice
A valid payment webhook can still corrupt order state when processed twice. Four fixes: raw body HMAC, idempotency, order states and bounded retries.
- Integration Reliability
- Security Engineering