Web
Connection Reuse and Keep Alive in the Go HTTP Client
See when the Go HTTP client reuses a connection and when it dials a new one, using httptrace, and how idle timeouts and Connection close change that.
7 min read
Library
Everything you need to level up your coding skills.
Web
Templ Live Reload and Editor Setup for Fast Feedback
Set up a fast templ edit loop: generate in watch mode, see text edits land without a restart, format with templ fmt, and set up the language server and CI.
8 min read
APIs
Rate Limiting Go APIs per API Key and per Route Cleanly
Rate limit a Go API per key and per route with token buckets: weighted costs, 429 with Retry-After, idle sweeping, a fake test clock and 123 ns decisions.
13 min read
Web
The Best Go Web Frameworks Compared by Use Case and Scale
Pick a Go web framework by what you are building: standard library, chi, gin, echo, fiber or huma, compared on dependency weight, handler portability and fit.
8 min read
APIs
Build a CRUD REST API in Go With the Standard Library
Build a CRUD API in Go with the standard library: a natural key, PUT upserts, ETag and If-Match locking, and a store contract tested on memory and SQLite.
22 min read
Web
HTTP 2 and HTTP 3 in Go and What Works Out of the Box
See what Go gives you for HTTP/2 and HTTP/3 with no extra code, count connections to prove multiplexing, and use cleartext h2c with http.Protocols.
8 min read
Web
Render Markdown in Go With Goldmark Without XSS Holes
Render Markdown in Go with goldmark safely: what defaults block, what WithUnsafe lets through, and how to sanitize output with bluemonday for user content.
10 min read
APIs
JSON Marshaling in Go With Tags Omitempty and Custom Types
A tour of encoding/json in Go: struct tags, omitempty and omitzero, nil versus empty, time and bytes, int64 precision, HTML escaping and measured speed.
14 min read
Web
Cache Headers for Static and Dynamic Responses in Go
Choose Cache-Control values for fingerprinted assets, HTML pages, API responses and private data in a Go server, and set them from one small middleware.
7 min read
Web
Templ Layouts Slots and Component Composition in Go
Build nested templ layouts with children, component slots, optional slots, conditional attributes, a script emitted once and data from the context.
7 min read
APIs
Authentication for Go APIs With Keys Tokens and Sessions
Build Go API authentication with one Principal and three mechanisms: hashed API keys, signed bearer tokens and cookie sessions, with 401 versus 403 and CSRF.
19 min read
Web
Test HTTP Handlers in Go Without Starting a Real Server
Call handlers directly with httptest.NewRecorder and NewRequest, set path values by hand, fake the store behind them, and assert on status, headers and JSON.
9 min read
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