Technical Writing
Practical writing on distributed systems, payment infrastructure, and backend engineering — drawn from real production experience.
Featured Articles
Mobile networks drop connections. Users double-tap buttons. Clients retry failed requests. If your payment API isn't idempotent, you're one bad network moment away from a double charge. Here's how to build it right.
Kafka and RabbitMQ solve different problems. Using the wrong one — or treating them as interchangeable — is a common architecture mistake. Here's a practical guide from building the Dashen Super App.
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Not all caching is equal. Caching the wrong thing, with the wrong TTL, at the wrong layer will give you cache invalidation bugs and zero performance gains. Here's what actually worked at AddisPay.
Rolling updates aren't zero-downtime by default. Between readiness probe timing, graceful shutdown, and load balancer deregistration, there are four places your deployment can drop live requests. Here's how to close all of them.
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