How to Learn JavaScript Promises and Async/Await in 20 Minutes
How to Learn JavaScript Promises and Async/Await in 20 Minutes
Dec 1, 2020
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Ankit Pandey on Instagram: "Promises can reduce your API response time by 80% using… Promise.all vs Promise.race vs Promise.allSettled The problem: You fetch user data (2 sec), then posts (2 sec), then comments (2 sec). Total = 6 seconds of painful loading screen. The solutions: Promise.all - Run all together, wait for everything When to use: You need all data before showing anything (dashboard loading user profile + activity + notifications simultaneously) Result: All 3 requests run in parallel
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