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
Every Go program ships with a garbage collector, and most run happily with the defaults. That changes the moment you
Continue readingGo GC Tuning with GOGC and GOMEMLIMIT: A Practical Guide for Containers
Every PostgreSQL connection is a process on the server. Not a thread, not an entry in a table — a
Continue readingDatabase Connection Pooling: PgBouncer, Pool Sizing, and the Math Behind Both
When a request crosses five services and the latency budget blows up, a single log line rarely tells you where
Continue readingDistributed Tracing in Go with OpenTelemetry
In 2022, Intel quietly buried the fastest storage medium anyone had ever shipped. Optane, built on 3D XPoint memory, was
Continue readingOptane vs. Modern SSDs: Why the Fastest Drive Ever Made Is One Nobody Can Buy
Every Prometheus failure I have debugged that was not a network problem eventually came down to the same thing: too
In late August, OpenAI’s Python SDK — one of the most-installed packages on PyPI — quietly completed a migration to
Continue readingHTTPX2 and the Art of the Open-Source Handover