getting started with goSep 20, 2026
How io.Reader and io.Writer Keep Go APIs Composable
Partial reads, EOF handling, io.Copy's fast paths, TeeReader and MultiWriter, buffering, and testing streams.
Read More →
best practisesSep 19, 2026
Table-Driven Tests in Go: Subtests, Parallelism, and Keeping the Table Readable
Structuring Go table tests so failures tell you which case broke: t.Run naming, parallel subtests, t.Helper, golden files, and the point where a plain test function wins.
Read More →
advanced topicsSep 18, 2026
Go 1.27: Generic Methods, encoding/json/v2, and What Actually Changes in Your Code
Generic methods, nested struct literal keys, encoding/json/v2, a uuid package, cheaper small allocations. What to use, what to test before you ship the upgrade.
Read More →
advanced topicsSep 16, 2026
Go Build Constraints: //go:build Syntax, Filename Suffixes, and Custom Tags
How go:build expressions and filename suffixes decide which Go files compile, plus custom tags, cgo constraints, and testing across platforms.
Read More →
best practisesSep 15, 2026
Testing HTTP Handlers in Go with httptest: Recorders, Servers, and Table Tests
Testing Go HTTP handlers with httptest.ResponseRecorder and httptest.NewServer: JSON bodies, headers, middleware, failure paths, and the mistakes that make tests hang.
Read More →
advanced topicsSep 14, 2026
Structured Logging in Go with log/slog: Levels, Attrs, Groups, and Handlers
How to configure log/slog in a real service: runtime-switchable levels, attrs and groups, context-aware handlers, source locations, and the allocation traps.
Read More →
One useful email at a time — no spam, unsubscribe anytime.
