This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Flash can store anything it likes in a defined temporary area on disk. Next time you load a Flash application, right click and choose "settings" - you'll see an option about Global Stroage Settings. The Flex documentation covers how you can do this.