Git / HTTP

Everyday git commands, status codes, and REST conventions.

Git commands for daily work

Ninety percent of git use is this handful of commands. Learn `switch` and `restore` — they split the overloaded `checkout` into two clear jobs.

Undoing things in git

gitresetrevert

Pick by blast radius: `restore` for files, `reset --soft` to re-do a commit message, `revert` for anything already pushed, `reflog` when you think work is gone.

HTTP status codes worth memorizing

httpapistatus

2xx succeeded, 3xx go elsewhere, 4xx the caller is wrong, 5xx the server is wrong. These are the ones that come up in real APIs.

REST basics

restapihttp

Nouns in the path, verbs in the method. GET must be safe and cacheable, PUT/DELETE idempotent, POST neither.

HTTP headers that matter

httpcachecors

Caching and content negotiation live in headers. `Cache-Control` decides whether your CDN does any work at all.