Issue #607: Comparing six Go cache designs — Go Weekly

Go Weekly Issue #607 covers a benchmark comparing six concurrent in-memory cache designs in Go (sync.Mutex, sync.RWMutex, sharded locks, etc.), an opinion piece on avoiding excessive nil pointer checks in favor of fail-fast construction, a trick for speeding up test suites 2x by caching a migrated database, building a stateless Git server using go-git and Tigris object storage, socket activation for Go HTTP services with systemd, and the Delve 1.27 debugger release with improved Go 1.27 support.