Web
Build a Load Balancer in Go With Active Health Checks
Build an HTTP load balancer in Go with round robin and least connections, active health checks with rise and fall thresholds, and passive failure marking.
14 min read
Library
Everything you need to level up your coding skills.
Web
Add Server Side Search to a Go Website Without Elastic
Add full-text search to a Go site with SQLite FTS5: stemming, bm25 ranking, highlighted snippets, search as you type and safe handling of raw user queries.
15 min read
APIs
JSON v2 in Go and What Changes for Your Existing Code
What Go's experimental encoding/json/v2 changes: case-sensitive keys, rejected duplicates, empty arrays for nil slices, Duration formats. v1 unchanged.
8 min read
WebGuide
The Go HTTP Client and Why the Default Is Dangerous
The zero value http.Client and http.Get have no timeout, lose connections when a body is not drained and read unlimited data. See each failure and its fix.
15 min read
Web
Templ With Chi Gin and the Standard Mux in Go Web Apps
Use templ components with the standard mux, chi, gin and echo: templ.Handler, path parameters, 404 pages, status codes and the differences between routers.
8 min read
APIs
OAuth 2 Server Basics in Go for Your Own API Clients
Build a small OAuth 2 server in Go: client credentials, authorization code with PKCE, exact redirect matching, single-use codes and a scope-checking API.
21 min read
Web
Standard Library Router or Framework in Go 1.22 and Later
Compare the Go 1.22 standard library mux with chi, gin, echo, gorilla mux and httprouter on routing speed, 405 handling and trailing slashes.
11 min read
APIsGuide
REST API Design Rules for Go Services That Hold Up
REST API design rules for Go services, from URLs and methods to errors, paging and versioning, with a small linter that checks the URL rules.
13 min read
Web
Long Polling in Go and Where It Still Makes Sense to Use
Implement long polling in Go with a cursor, a wait that ends on publish, timeout or disconnect, and learn when it beats WebSockets and server sent events.
8 min read
Web
Build a Blog Engine in Go Powered by Markdown Files
Build a blog engine in Go that embeds Markdown files, parses front matter, hides drafts and scheduled posts and serves index, tag and post pages.
18 min read
APIs
Tell Null Missing and Zero Apart in Go JSON Decoding
Tell absent, null and zero apart when decoding JSON in Go: why pointers fail, what RawMessage and a generic Optional give you, and omitzero on output.
10 min read
Web
Expvar and Simple Metrics Endpoints in Go Services
Publish counters and gauges from a Go service with the standard library expvar package, mount its handler safely and see when Prometheus is the better choice.
4 min read
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