Fighting cross-site request forgery (CSRF) becomes easier in Go 1.25, thanks to the new cross origin protection feature.

Why should you let tracing pile up huge amounts of data when you need only a few seconds of trace output? Meet FlightRecorder.

Before Go 1.25, GOMAXPROCS defaults to the number of available physical CPU cores at app startup time. Now it takes container limits into account and checks changes periodically.

WaitGroups are a means of synchronizing goroutines; yet the Add()/defer Done() idiom feels clumsy and is error-prone. A new method, Go(), puts an end to goroutine counting.

Tests that rely on time.Sleep() to test timings can be unreliable and slow. The synctest package introduces two antidotes: fake time and