Performance

Web page performance is critical to keeping customers and visitors moving along on your site. Slow responses typically result in frustrated users, unhappy customers and worse, abandoned orders. It is important to reduce the number of requests generated by a web page in order to increase its actual and perceived performance.

One critical way is to reduce the number of external files loaded by a page. Another one is to reduce their size through compression. This post aims to take this concept a step further by automating this tedious process using open-source libraries.

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Web developers now have the ability to store large amounts of persistent data on the client-side, way beyond the 4K limit of cookies. Options include HTML 5 Storage, Gears, Dojo Storage, and more. Brad Neuberg talks about the latest ways to achieve browser-based client-side storage and how it can help you make better web apps.

Seen at the Yahoo! Developer Network Blog.

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Image Optimization, AlphaImageLoader

This article, part 5 of a series on image optimization, talks about the use of transparent PNGs with IE6 and why the AlphaImageLoader hack is bad and a very interesting solution This installment of the image optimization series is about the IE-proprietary AlphaImageLoader CSS filter, which developers often use as a workaround to solve transparency [...]

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Ext-JS to Provide Free CDN Hosting for its Framework

This is great news for the Ext-JS community. Here is why you should take advantage of a content delivery network. We are pleased to announce that Ext has partnered with CacheFly, a global content network, to provide free CDN hosting for the Ext JS framework. Cachefly’s globally distributed network and aggressive caching accelerate the delivery [...]

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Steve Souders Releases Hammerhead, Firebug Extension

Improving performance starts with metrics. How long does it take for the page to load? Seems like a simple question to answer, but gathering accurate measurements can be a challenge. Enter Hammerhead, Steve Sounder’s latest Firebug extension.

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