Observability in Go, from signals to alerting

The pick of the day is a long piece on observability in Go that argues from measurement rather than rule of thumb, covering signal placement, cardinality, dashboards, alerting, and PII across metrics, logs, and traces. It pairs naturally with a reddit thread on hunting goroutine leaks in a long-running CLI, which is exactly the kind of thing decent instrumentation is supposed to make visible before the memory graph does. Elsewhere, a goimports proposal floats a config file for package aliases, and someone announces list2regexp for turning string lists into regexes, which is a pleasingly specific problem to have solved.