October 2019
Intermediate to advanced
358 pages
8h 22m
English
Content preview from Programming Phoenix 1.4Become 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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Introspecting Applications with Observer
Every time we start our Rumbl application, we have multiple applications running side by side. Each of our dependencies is in fact its own application. Phoenix and Elixir itself are applications too! An Application in Elixir is a runtime concern with these responsibilities:
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Applications package our code. Every time we compile our rumbl project, Mix prints “Generated rumbl app”. Open the file _build/dev/lib/rumbl/ebin/rumbl.app. It mostly contains metadata about the application, such as its modules, processes, a description and more.
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Supervisors can start and stop applications as a unit. An application may have a supervision tree, which defines exactly which services to start when the application starts, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.