December 2019
Intermediate to advanced
248 pages
5h 34m
English
Content preview from Designing Elixir Systems With OTPBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Establish Your Boundaries
The boundary layer deals with side effects and state. This layer is where you’ll deal with processes, and where you’ll present your API to the outside world. In Elixir, that means OTP.
We want to dispel the notion that each time you type mix new, you must reach for a GenServer, the fundamental abstraction in OTP. The first way to win the boundary game is not to play. Some projects don’t need boundary layers at all. If you’re building a library of functions that doesn’t need processes, don’t add them. Your code is a library and can present an API that serves your purposes just fine. There’s no boundary; no GenServer; no lifecycle. Your library will serve other software systems that provide this infrastructure, but it ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.