Re:Write Fast Apps Using Async Python 3.6 and Redis
by cronin101 on Friday April 28, 2017 @10:07AM
(#14219454)
The next statement has to wait, but the runtime can yield to another waiting async task so you aren't blocking the total throughput of your program (assuming it's async-all-the-way-down).
The benefits are generally larger-scale than a single method.
In your example you'd probably want to be using Promise.all to run two IO operations simultaneously.