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With the combination of a few URL rewrite rules and a PHP script, you can automate the process of combining, compressing, and caching the JavaScript and CSS files used by your site to vastly improve performance.
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Updated to cover Prototype 1.5.0_rc2, this excellent set of developer notes will get experienced JavaScript coders up to speed on Prototype in no time. With official documentation still lacking, unofficial sources like this remain vital references.
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The Dojo Offline Toolkit project will enable anyone to build a web application that works transparently offline by caching the data it needs locally. Users will need to install a small runtime the first time they use an application offline.
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Thanks to Ajaxian, a comprehensive round-up of the JSON vs. XML debate that seems to have raged over the holiday break.
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The third in the IE team’s series on improving JavaScript performance. Unfortunately, the advice in this part isn’t particularly practical. It boils down to: don’t use closures unless you have to, and don’t write OO JavaScript code that looks like Java.
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A fascinating look at the impact of client-side caches on the real-world performance on web sites. In particular, we see that Yahoo! sees 40-60% of its visitors arriving with no cached content, so the uncached load time of your site is very important.
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