September 2007
Intermediate to advanced
170 pages
4h 24m
English
Content preview from High Performance Web Sites
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Examples
To demonstrate the benefits of minification and obfuscation, I have generated two scripts of different sizes: a small script (50K) and a large script (377K). The small script drops to 13K after minification and 12K after obfuscation. The large script is reduced to 129K after minification and 123K after obfuscation. Testing both files under these three states results in the following six examples.
- Small Script Normal
- Small Script Minified
- Small Script Obfuscated
- Large Script Normal
- Large Script Minified
- Large Script Obfuscated
As shown in Table 12-3, minification and obfuscation perform about the same, but are significantly faster than the normal case. For the small script, minification and obfuscation are 100–110ms (17–19%) faster than the normal case. For the large script, minification and obfuscation are 331–341ms (30–31%) faster than the normal case.
Table 12-3. Response times for minified and obfuscated scripts
Script size | Normal | Minified | Obfuscated |
|---|---|---|---|
Small (50K) | 581 ms | 481 ms | 471 ms |
Large (377K) | 1092 ms | 761 ms | 751 ms |
As mentioned in the previous section, the difference between minification and obfuscation decreases when combined with gzip compression; this is demonstrated by these examples. Minifying ...
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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.