Traces are the most expensive observability signal you collect. A single request through a microservice stack can produce hundreds of
Continue readingTail-Based Sampling: Paying Only for the Traces Worth Keeping
Pagination looks like the least interesting problem in backend engineering — until the page that took 30 ms at depth
Continue readingPagination at Depth: Why OFFSET Falls Over and How to Build Cursors That Don’t
Every slow query investigation eventually arrives at the same place: the EXPLAIN output. It is the single most information-dense tool
Continue readingReading the Plan: What EXPLAIN ANALYZE Is Actually Telling You
When people picture a software supply chain attack, they usually imagine malicious code sneaking into a dependency. In practice, most
Continue readingYour Build Pipeline Is the Attack Surface: Practical Software Supply Chain Defense
Most SLO programs die the same way. A team writes “99.9% availability” on a slide, everyone nods, and six months
Continue readingError Budgets in Practice: Burn-Rate Alerts That Fire When It Matters
Most Go developers can recite one fact about the garbage collector: it exists, and it mostly works. That is usually
Continue readingGo’s Garbage Collector: Tricolor Marks, Write Barriers, and the Green Tea Era
Every API that survives long enough faces the same moment: a requirement lands that cannot be expressed as an additive
Continue readingAPI Versioning: How to Change a Live API Without Breaking Every Client
Every Go service that talks to PostgreSQL sits on top of a pool, and almost every incident review that mentions
Continue readingConnection Pooling Is a Queue: Sizing pgxpool Against PostgreSQL’s Process Model
Every allocation your program makes is a promise the kernel keeps lazily. When you write make([]byte, 512<<20) in Go, you
Continue readingVirtual Memory Is Deferred Work: Page Faults, RSS, and Why Allocation Numbers Lie
Whenever your backend fetches a URL that a user influenced — webhook targets, import-from-URL features, URL previews, PDF generators, RSS
Continue readingSSRF Defense That Actually Holds: DNS Rebinding, Redirects, and Cloud Metadata