Wednesday, July 23rd, 2008
Tenni Theurer of Yahoo! has a new performance post, this time focused on serving files faster by combining them:
One performance technique without having to simplify the page design is to combine multiple scripts into a single script, and similarly combine multiple stylesheets into a single stylesheet.
Combining multiple files reduces the extra bytes from HTTP headers as well as potential transfer latency caused by TCP slow starts, packet losses, etc.
Tenni continues to discuss the issue and a solution that Yahoo! implemented, a simple app that combines the files on the fly:
Combo Handler provides a way to allow developers to maintain the logical organization of their code in separate files, while achieving the advantages of combining those into a single file as part of the final user experience. It alleviates the need for the time-consuming re-build and re-push processes. In addition, Combo Handler integrates seamlessly into a content delivery network, taking full advantage of the benefits of a CDN while reducing the drawbacks of dynamically combining separate files.
What about the numbers though. Well, this simple technique saved HotJobs 8% on their response time, and this was on a page that already had an A grade in YSlow, so was highly optimized.
Posted by Dion Almaer at 8:14 am