How to increase the performance of the Flex application using the new Flash Player cache feature available in new Adobe Flash Player

How to increase the performance of the Flex application using the new Flash Player cache feature available in new Adobe Flash Player.1. The Flash Player cache is a new feature available in Flash Player 9 Update 3 (9,0,115,0).
2. The cache allows files signed by Adobe to be cached by Flash Player.
3. These files end in the file extension .swz.
4. They can be reused in more than one domain, apart from the domain in which they originated
5. The SWZ file persists in the cache even after the browser is closed, provided that the end user does not change settings in the Flash Player Settings Manager to reduce their caching ability
6. A SWZ downloaded in IE can also be used in Mozilla Firefox as it requires only one copy of the framework
7. In Flex 3 , the framework library code has been rolled into RSLs (Runtime shared library)
RSL can either be an SWZ or SWF, which can be loaded runtime instead of being statically linked into the application Because of this, the application’s file size becomes smaller.
8. Once the Flex-signed RSLs are cached on a user’s machine from running one application, they are available for use by all other applications, regardless of the original domain used to load the application.

Important things

When you choose the option to use RSLs, all of the debug information is removed.
So you can easily switch between a statically linked application and a dynamically linked application just by toggling the option in the Framework Linkage pop-up menu from “Merged into code” to “Runtime shared library (RSL).”

The framework RSL is the only RSL that is configured by default in the flex-config.xml file because every Flex application uses over 100K of framework classes. If you do add RSLs, the compiler will always load any RSLs you specify whether or not they are used by your application.

For more information on this check the following link
http://www.adobe.com/devnet/flex/articles/flash_player_cache_print.html

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