December 2014
Intermediate to advanced
434 pages
9h 48m
English
Content preview from Java EE 7 Development with WildFlyBecome 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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Chapter 8. Adding WebSockets
WebSockets are one of the biggest additions in Java EE 7. In this chapter, we will explore the new possibilities that they provide to a developer. In our ticket booking applications, we already used a wide variety of approaches to inform the clients about events occurring on the server side. These include the following:
- JSF polling
- Java Messaging Service (JMS) messages
- REST requests
- Remote EJB requests
All of them, besides JMS, were based on the assumption that the client will be responsible for asking the server about the state of the application. In some cases, such as checking whether someone else has not booked a ticket during our interaction with the application, this is a wasteful strategy; the server is in the position ...
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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.