Efficiently Managing Multiple Asynchronous Tasks with Async/Await

Discover how to utilize parallel execution capabilities offered by async/await in JavaScript to optimize performance and improve productivity

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JavaScript developers often face challenges when executing multiple asynchronous operations concurrently. Fortunately, async/await provides built-in support for parallel processing, allowing efficient management of several tasks simultaneously. In this guide, we delve deep into the concept of parallel execution with async/await and present real-world examples.

To begin, let’s clarify some terminology. Concurrency refers to performing many tasks over time, whereas parallelism implies running these tasks truly simultaneously. Although JavaScript runs single-threaded, Web APIs allow non-blocking I/O operations, enabling us to create the illusion of multi-tasking. Thanks to async/await, such activities become simpler to control.

Consider the following scenario involving three API calls made independently but executed sequentially:

async function getUserDataSequential() {
  const response1 = await fetch('https://api.example.com/user1');
  const data1 = await response1.json();
  
  const response2 = await…