Amcom Technology's TJ Downes posted an in-depth article on RSLs, what they are, and tips to troubleshooting problems.
In this post we are going to examine the ins and outs of Runtime Shared Libraries. Runtime Shared Libraries (RSLs) are compiled libraries of code that allow you to cache functionality into the browser or Flash Player. One of the most common uses of RSLs are the Framework RSLs included in the Flex Framework, used to cache the Flex Framework. This can potentially speed load times. These Framework RSLs are the topic of today's post.