September 2016
Intermediate to advanced
210 pages
4h 47m
English
Content preview from Building Isomorphic JavaScript Apps
Become 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,
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.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.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.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.
Chapter 1. Why Isomorphic JavaScript?
In 2010, Twitter released a new, rearchitected version of its site. This “#NewTwitter” pushed the UI rendering and logic to the JavaScript running in the user’s browser. For its time, this architecture was groundbreaking. However, within two years, Twitter had released a re-rearchitected version of its site that moved the rendering back to the server. This allowed Twitter to drop the initial page load times to one-fifth of what they were previously. Twitter’s move back to server-side rendering caused quite a stir in the JavaScript community. What its developers and many others soon realized was that client-side rendering has a very noticeable impact on performance.
Note
The biggest weakness in building client-side web apps is the expensive initial download of large JavaScript files. TCP (Transmission Control Protocol), the prevailing transport of the Internet, has a congestion control mechanism called slow start, which means data is sent in an incrementally growing number of segments. Ilya Grigorik, in his book High Performance Browser Networking (O’Reilly), explains how it takes “four roundtrips… and hundreds of milliseconds of latency, to reach 64 KB of throughput between the client and server.” Clearly, the first few KB of data sent to the user are essential to a great user experience and page responsiveness.
The rise of client-side JavaScript applications that consist of no markup other than a <script> ...
Become 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,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.