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Node.js
Node.js
How does error handling work in async/await?
Short answer: You handle errors using try/catch blocks around await statements. async function getUser() { try { const user = await getUserFromDB(); return user; } catch (error) { console.error('Error fetching user:', error); } } Without try/catch, unhandled promise rejections can crash your app.
Example code
You handle errors using try/catch blocks around await statements. async function getUser() { try { const user = await getUserFromDB();
return user; } catch (error) { console.error('Error fetching user:', error); }
} Without try/catch, unhandled promise rejections can crash your app.
Real-world example (ShopNest)
ShopNest’s Node API handles many checkout requests concurrently because I/O (DB/HTTP) is non-blocking on the event loop.
Say this in the interview
- Define — one clear sentence (the short answer above).
- Example — relate it to a project like ShopNest or your real work.
- Trade-off — when you would not use it.
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