Adobe Flex 3 and AIR 1.0 certainly have generated quite a buzz in the Java world in the last few months. Not in the least by the very nice Parleys.com site which is hosting all the Javapolis talks and videos.

Adobe AIR is a technology which lets you download and run webapps seamlessly on your desktop. (similar to Google Gears).

Another well known Google app, Google Analytics has now been ported to AIR by Nicolas Lierman. Analytics features all sorts of interesting statistics about your site visitors, allowing you to make informed choices on how to improve your site (eg. which pages are popular, which are not, which pages have high exit points, …)

The AIR version (with really nice Flex chart animations), can be download at AboutNico

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Showcase: Google Analytics AIR beta 3 (for AIR 1.0)

A new version has now been released: YSlow v0.9.3, and one of it’s notable new features is that it works now on Firefox 3 beta3 and later. For those that didn’t try Firefox 3 yet, we can already say it improves rendering speed and uses a lot less memory then Firefox 2. Unfortunately not all the plugins have been made compatible yet with Firefox 3, so you may want to wait a bit before removing Firefox 2.

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YSlow v0.9.3 Firebug plugin available

YSlow, a free plugin from Yahoo that works on top of Firebug additionally computes a performance grade report for your website.

Some of the rules it uses are:

1. Make Fewer HTTP Requests
2. Use a Content Delivery Network
3. Add an Expires Header
4. Gzip Components
5. Put CSS at the Top
6. Move Scripts to the Bottom
7. Avoid CSS Expressions
8. Make JavaScript and CSS External
9. Reduce DNS Lookups
10. Minify JavaScript
11. Avoid Redirects
12. Remove Duplicate Scripts
13. Configure ETags

Implementing these performance improvements suggestions may speed-up your site greatly as according to Yahoo’s research almost 80% of the time is spent on the client side. So optimizing your Java server side code is not the only thing you should be focusing on

YSlow 0.9 improves the plugin for Web2.0 applications as it now supports AJAX requests, frames and iframes. There are several other new features and bug fixes described in the release notes including highlighting HTTP 404s, better detection of CSS expressions and JavaScript minification, and searching within the YSlow panel.

This is a post from JavaBlog.be

Speedup your ajax site with YSlow Firebug plugin v0.9 Release