APIs
API Documentation in Go With Swagger UI Embedded in Binary
Serve interactive API docs from a Go binary: Swagger UI embedded with swgui, the spec via go:embed, a password gate, CSP caveats and a build tag.
10 min read
Library
Everything you need to level up your coding skills.
Web
Proxy Support and Environment Variables in Go HTTP Code
How Go's HTTP client reads HTTP_PROXY, HTTPS_PROXY and NO_PROXY, which hosts it never proxies, why runtime changes are ignored, and how to set one yourself.
7 min read
Web
Build an Admin Dashboard With Templ HTMX and Tailwind
Build an admin dashboard in Go with templ, HTMX and Tailwind classes: a shell, stat cards, a sortable paged table, role aware buttons and server side checks.
20 min read
APIs
Async Jobs in Go APIs With 202 Accepted and Polling
Run long work behind a Go API with 202 Accepted: a bounded worker pool, a pollable job resource, Retry-After, idempotency keys, cancellation, clean shutdown.
16 min read
Web
Build a URL Shortener in Go With Tests and a Database
Build a URL shortener in Go on SQLite with random base62 codes, collision retries, custom aliases, expiry, hit counting and tests for the awkward cases.
19 min read
APIs
Pagination in Go APIs With Offset Cursor and Keyset
Paginate a Go API with offset, keyset and signed cursors on SQLite: duplicates under inserts, rows lost on tied keys, and 7.9 ms against 31 µs at depth.
15 min read
Web
Subdomain Routing With the Standard Mux in Go Apps
Route api, admin and www hosts to different handlers with one http.ServeMux by putting the host in the pattern, and learn how it treats ports and case.
4 min read
Web
Build a Server Rendered Dashboard in Go With HTMX Basics
Build a dashboard in Go with html/template and HTMX: fragments chosen by the HX-Request header, polling cards, filters, a retry button and HX-Trigger.
16 min read
APIs
Large JSON Responses in Go Without Running Out of Memory
Serve a 200,000-row JSON export in Go by streaming rows from the database: first byte in 1 ms instead of 161, 1 MB of heap instead of 57, and gzip on the fly.
11 min read
Web
Transport Settings for a Production Go HTTP Client
Walk through every http.Transport field that matters in production, with the default value, what changing it does and measured effects of connection limits.
7 min read
Web
Templ Testing Components With Golden HTML Files in Go
Test templ components with golden HTML files and an update flag, add structural checks that parse the output with x/net/html, and read a failure message.
9 min read
APIs
Quotas and Usage Metering in Go APIs Done Correctly
Meter API usage and enforce quotas in Go: an atomic conditional UPDATE, idempotent events, weighted routes, refunds for 5xx, UTC periods and reconciliation.
18 min read
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