March 2020
Intermediate to advanced
328 pages
7h 58m
English
Content preview from Real-Time Phoenix
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Phoenix Tracker Versus Presence
Phoenix Presence is an implementation of Tracker that provides helper functions for working with Channels. Its implementation of handle_diff/2 broadcasts changes locally using PubSub when a process joins or leaves the Tracker. Clients listen for change messages and process them to keep a client-side version of the Tracker state. The official Phoenix JavaScript library includes a Presence class that handles the messages automatically for us. The following figure shows the flow of Presence updates:
Due to the similarity between the two libraries, it can be confusing to decide which one to use. If you want to have ...
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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.