RSS or Really Simple Syndication, as it is commonly known, is a technology that gives webmasters the ability to easily distribute and publish syndicated content on the Internet. Once the feed is cached it will be read from the local hard drive for a specified amount of time. After the specified time has lapsed, the RSS feed will be fetched again. This allows the contents of the RSS feed being displayed to remain current, while expediting the whole process. Cache RSS feeds reduce bandwidth usage. The bandwidth is reduced because the web server does not have to repeatedly fetch the same RSS feed from your server.