Flash glossary: Runtime shared library
Use runtime shared libraries in Adobe Flash Professional to decrease the download time of SWF assets. These libraries are especially useful when developing larger applications or when numerous applications on a website use the same components or symbols.
By externalizing the common assets of your SWF files, you can eliminate the need to download classes repeatedly. The first SWF file that uses a shared library has a longer download time because both the SWF file and the library have to load. After the library is cached on the user's computer, all subsequent SWF files can use the cached library.
Using runtime shared libraries as a strategy has been shown to greatly improve download times for some larger Flash applications. To learn more about working with shared library assets, read the section titled Sharing library assets in the Flash documentation.
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