Go 1.25 testing/synctest: No More Flaky Concurrent Tests
Three green tests locally, two red on CI. The outcome depends on how busy the build server is that day. This isn't a logic bug — it's a time.Sleep tha…
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Catching Goroutine Leaks in Go Tests With goleak
Book: The Complete Guide to Go Programming Also by me: Hexagonal Architecture in Go — the companion book in the Thinking in Go series My project: Herm…
Stop Guessing Your Cache Locality: Verify JEP 401 Value Class Flattening with JFR
Stop Guessing Your Cache Locality: Verify JEP 401 Value Class Flattening with JFR JEP 401 value classes are a massive win for memory density, but too …
Resources for Learning to Build Technologies from Scratch with Go: Books and Free Online Courses
Introduction to Building Technologies from Scratch with Go Building technologies from scratch using Go is more than a learning exercise—it’s a gateway…
The Document Number Is Reserved Before the PDF Exists
The hard part of document numbering is not incrementing an integer. It is deciding what happens when the integer is reserved, rendering starts, and th…
Code Review Horror Stories. Часть 2: API, ошибки и graceful shutdown
Продолжение разбора реального кода с собеседования. В первой части разобрали 8 проблем concurrency и memory: race conditions, утечки горутин, проигнор…
Owned Async Work In TypeScript. Promise.race Does Not Cancel Your Work
Why Promise.race, Promise.all, and async helpers need an ownership model for cancellation, cleanup, and production agent work. Three providers. One wi…