Ext CDN – Custom Builds, Compression, and Fast Performance
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 of web content like JavaScript and CSS, making for an even faster Ext experience.
The Ext CDN also provides the ability to create your own custom builds using Ext’s Build It! tool, and host them on the CDN. The custom builder implements features to intelligently cache your component selections, adapter, and Ext version to create a unique custom build. These custom builds are cached across sessions and used by anyone who makes the same selections as you have – allowing for caching of custom builds across applications to fully realize the benefits of the CDN.
Creating a Custom Build
We’ve made the process of creating the custom build on the CDN as simple as a selecting the option.
Using the Custom build
To use your custom build on your own site, insert the output into the HEAD section of your site. If you needed to use a build with no grid or tree support you would just paste the following:
For those of you that need the complete library and use ext-all.js and ext-all.css we have those available as well.
Summary
There are many ways to judge an application’s performance, however none are as noticeable as the time it takes for an application to load. There are many techniques such as compression using gzip , minification using JSMin, and tools like YSlow to help developers make noticeable improvements. We hope the Ext CDN is another optimization our community will add to their toolbox.
This is great guys!
FYI, the link to the CSS file is wrong, it should be:
Note the word “resources” is spelled with a “c” instead of an “s”.
Correct URL for comment above:
http://extjs.cachefly.net/ext-2.2/resources/css/ext-all.css
Thanks David. I corrected the link in the post above.
Great contribution to the community!
The url http://cachefly.net needs to be http://www.cachefly.net
How about https access? We can’t use http in our app or IE will put up the “This site contains secure and non-secure items blah blah I hate IE” (well, something like that)
This run as faster as locally! This is incredible. You can know include ext-all.js without any download delay issues. Of course, if you build your own, you can increase the speed even more.
I just wired this up to my application, and all I can say is “WOW”. This is a great move in the right direction for us. One question: Are there any plans to host any of the more common themes that are available (xtheme-slate is a perfect example) to further accelerate loading in themed applications?
WOW.
This is great news and will encourage me to use Ext more. The v3.0 preview looks fantastic aas well so all in all things are looking really great for Ext
Ext is the shit! Awesime work guys.
What about https access? This hasn’t been addressed.
CacheFly doesn’t support SSL from what we could tell. Unfortunately, last I checked, neither did AOL’s, Google’s or Amazon’s CDN. We did some searching around and found Level 3 had SSL support. Hope that helps.
Google has just started delivering HTTPs content for Ajax Libraries over their CDN. Maybe now CacheFly will also do it ?
You don’t use it for your own site (the examples area for instance)…
Very nice!
What about all the other resources, could they also not be put on the CDN? E.g.:
extjs/resources/css/xtheme-gray.css
extjs/adapter/ext/ext-base.js
extjs/ext-lang-de.js
What about ext-base.js and ext-all.js could it not be merged to diminish request count?
Is the cdn file a complete extjs build it seems to be missing one class ‘Ext.form.Label‘ when compared to ‘ext-all.js’(Line no 140: Ext.form.Label)
anyone else have trouble with this???
Bye the way I love extjs!!!!!!
@jimmy What url are you using? Custom build or the link below?
http://extjs.cachefly.net/ext-2.2/ext-all.js
So, I know this is free so it’s hard to complain, but cachefly does not set any expires headers, only etags.
[...]Thanks for sharing your work with us! Your theme is just awesome![...]
So, I know this is free so it’s hard to complain, but cachefly does not set any expires headers, only etags.
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ext论坛什么时候能支持中文呢？
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Thanks!
This is awesome!
Firebug reports that the files on CacheFly are coming back as 200 OK rather than Not Modified. Their servers are fast, but why aren’t they allowing the browser cache to take care of subsequent requests?
Is there any reasonable CDN that does HTTPS? I want to put extjs there. Thx.
saolun ya cokda makbule gecti:d
I am grateful to you for this great content.aöf
Have the 3.0 files been published? What is their URL? Will the “Build Your Own” tool be updated?
I’m really very useful to follow a long-time see this as a blog here Thank you for your valuable information.
Chinese Editon of post, following this url:
改教程的中文版在:
http://blog.csdn.net/zhangxin09/archive/2009/11/21/4842665.aspx
n to take advantage of more of the ssnative functxcxxx
n to take advgantage of more of the ssnative functasdassass
teşekkürler admin good work
2 developers
good work, thanks!
What is the value of it today? The latest version of ExtJs is not available???