November 2015
Intermediate to advanced
200 pages
4h 26m
English
Content preview from Ruby Performance OptimizationBecome 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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Make ActionView Faster
It’s not unusual for template rendering to take longer than controller code. But you may think that you can’t do much to speed it up. Most templates are just a collection of calls to rendering helper functions that you didn’t write and can’t really optimize—except when they’re called in a loop.
Rendering is basically a string manipulation. As we already know, that takes both CPU time and memory. In a loop we multiply the effect of what is already slow. So every time you iterate over a large dataset in a template, see whether you can optimize it.
Rails template rendering has performance characteristics similar to Ruby iterators. It’s fine to do just about anything, until you render partials in a loop. There are two ...
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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.