Your CPU does not read single bytes. It moves memory between caches in fixed-size blocks called cache lines — 64
Continue readingFalse Sharing in Go: How 64-Byte Cache Lines Slow Down Race-Free Code
Every API you ship is a promise. Clients hardcode your URLs, parse your field names, and schedule work around your
Continue readingAPI Versioning Strategies: Path vs Header, Calendar Dates, and Graceful Sunsets
Your webapp has a feature where users can attach an image by URL. A user submits https://example.com/logo.png and the backend
Continue readingSSRF: The Vulnerability That Turns Your Server Against Its Own Network
Every schema migration tool will happily tell you how to change a table. Almost none of them will tell you
Continue readingZero-Downtime Database Migrations: Expand-Contract, Backfills, and Locks
The sidecar pattern has been part of the Kubernetes toolkit for as long as pods have existed: run a second
The network drops the connection two seconds after your client sends the payment request. Did the charge go through? Your
Continue readingIdempotency Keys: Making API Retries Safe by Design
Every codebase has one. A function nobody wants to touch, guarded by a check so strange it looks like vandalism:
Continue readingChesterton’s Fence and the Ethics of Deleting Legacy Code
Kubernetes ships with a promise: change an image tag, and the platform replaces your pods gradually, keeping the old version
Somewhere between the first integration and the hundredth, every API team hits the same wall: the change you need to
Most tests you have written answer a narrow question: does the code produce the expected output for this one input?
Continue readingProperty-Based Testing with Hypothesis: Generating Bugs You Never Wrote Tests For