A request fails at 2 AM. The on-call engineer greps through logs looking for a trace ID, finds seventeen lines
Continue readingStructured Logging in Go With slog: Handlers, Sampling, and Dynamic Levels
Another week, another pile of repositories crossing the ten-thousand-star mark in days. Most weekly roundups stop at the star count,
Continue readingTrending GitHub Repos This Week: Typed Decision Models Take Over the Trending Page
PgBouncer has quietly become mandatory infrastructure for PostgreSQL at scale. If you run more than a few hundred client connections
Python 3.13 gave us something Python developers had wanted for decades: a build of CPython with no Global Interpreter Lock.
Every team starts with environment variables because every framework supports them. A DATABASE_URL in a .env file, a compose file
Every Prometheus outages post-mortem tells the same story in a slightly different costume. The server ran fine for months, then
Continue readingPrometheus Cardinality Explosions: Why Your Monitoring Server Ran Out of Memory
Some code teaches you an algorithm. Some code teaches you a way of thinking. The snippets below are in the
Continue readingFive Code Gems From Quake, Redis, Linux, Python, and SQLite — and What They Teach
Every analytics dashboard has one question that looks trivial and isn’t: how many unique users did this? You can run
Continue readingHyperLogLog: Counting a Billion Uniques in 1.5 KB of Memory
Getting a request into your system is the easy part. The hard question arrives at hop two: when the order
You hit “Place Order,” the spinner hangs for ten seconds, and you tap the button again. Now the fear sets
Continue readingIdempotency Keys Done Right: Building Retry-Safe APIs That Never Double-Charge