5 articles tagged with "http"
no-cache doesn't mean don't cache. no-store isn't the stronger version of no-cache. And stale-while-revalidate is quietly the best directive nobody uses. Time to actually understand the header you've been Stack-Overflow-copying for years.
Your API probably re-sends the same JSON blob a thousand times a day to clients who already have it. ETags fix that — and they quietly solve lost-update race conditions too. Here's how to actually wire them up.
Every service on your team invents its own error shape — {error}, {message}, {err.msg}, a stack trace in prod if you're unlucky. RFC 7807 Problem Details gives you one boring, predictable format, and boring is exactly what error handling should be.
You've been calling your JSON-over-HTTP CRUD endpoints 'RESTful' for years. So has everyone else. Roy Fielding would like a word — and understanding what he actually meant might change how you design your next API.
Your API is re-sending the same data over and over — like a waiter reading the menu out loud every time you visit. ETags and Cache-Control let Node.js say 'you've already got this' and skip the whole trip. Here's how to set it up in Express in about 10 lines.