concurrency

Async/Await Pattern

Async/await is a language pattern that lets you write asynchronous code in a synchronous style, avoiding deeply nested callbacks (callback hell). Under the hood, async functions return promises (or futures) and await suspends execution until the promise resolves, yielding control back to the event loop. This makes concurrent I/O-bound code dramatically easier to read, write, and debug. It is the dominant pattern for modern JavaScript and Python asynchronous programming.