October 2013
Intermediate to advanced
261 pages
7h 4m
English
Content preview from High Performance DrupalBecome 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 2. Frontend Performance
The principles of frontend performance apply regardless of the underlying application used to create a website. The browser receives an HTML document and, based on its contents, downloads CSS, JavaScript, fonts, and images; it then renders the page using all of these. The 14 rules defined by Steve Souders’s High Performance Websites (O’Reilly) remain a good reference point for examining the pages served by a site and identifying areas for improvement (see this page for a refresher). Google’s PageSpeed and Yahoo!’s YSlow will quickly grade a single page of your site and identify the highest-priority areas for improvement. For this chapter we’re going to assume you have a working grasp of the rules (cacheable headers, compression, minimizing HTTP requests, etc.) and, rather than discussing them, we’ll look at the challenges specific to developing Drupal websites when implementing those rules.
Limiting HTTP Requests
Drupal provides CSS and JavaScript aggregation via a configuration option. This allows potentially dozens of individual requests for CSS and JavaScript files to be reduced to just a few. While enabling this option in production should be one of the first steps you take to optimize frontend performance, there are several other steps you can take to minimize HTTP requests that require some more work on your part. Especially on mobile devices, or slow Internet connections in general, the number of HTTP requests can have the most serious negative ...
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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.