#Http

🏷️ Node.js ETags: The HTTP Caching Trick That Makes Your API Feel Telepathic

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.