How Does Async Work?

How Does Async Work?

If you work with Node.js or Python you might have heard of asynchronous programming a.k.a. async/await.
It lets you do something else while you wait on some work to be done in the background - like reading a file or sending some data over the network.
But what is it, really? And are there differences between the programming languages?
Let's go on a trip through async-land and discover callbacks, event loops, and state machines.
We will look at Node's, Python's, and Rust's async features and how they work under the hood.


Matthias Endler

September 24, 2019