You are designing a SharePoint 2010 application. You have an Internet-facing site with numerous image and
movie files.
You need to ensure that these files are cached so that they are displayed to users quickly.
Which approach should you recommend?
A.
In the SharePoint web.config file, set the cacheForEditRights property of the OutputCacheProfiles element to
true.
B.
In the SharePoint web.config file, set the enabled property of the Blob Cache element to true.
C.
In Site Collection Administration, use Site Collection Cache Settings to configure the cache.
D.
In Central Administration, use Search Administration to manage the cache.
http://blogs.msdn.com/b/spses/archive/2012/08/29/blob-cache-in-sharepoint.aspx
SharePoint Server 2010 provides three types of caches that help improve the speed at which Web pages load in the browser.
1. The BLOB cache
2. The Page Output Cache
3. The Object Cache
Page output and object cache require that you activate the ‘SharePoint Server Publishing’ feature located in the site features of your web site.
BLOB cache:
SharePoint Server 2010 provides a disk-based cache that stores files that are used by Web pages to help them load quickly in the browser, and reduces the load on the database server when it uses those files. The BLOB cache is stored directly on the hard disk drive of a front-end Web server computer. By default, the BLOB cache is off and must be enabled to use the functionality it provides. When you enable the BLOB cache on your front-end Web server, you reduce the load on the SharePoint Server 2010 database server created by read requests from Web browsers. You enable the BLOB cache in the Web.config file of the Web application to which you want to apply it. The changes that you make to the Web.config file will be applied to all site collections within the Web application. To enable, update web.config