The cache consists of a high-speed object database called the object store. The object store indexes objects according to URLs and associated headers, enabling Websense Content Gateway to store, retrieve, and serve Web pages, and also parts of Web pages, providing optimum bandwidth savings. Using object management, the object store can cache alternate versions of the same object, varying on spoken language or encoding type, and can store small and large documents, minimizing wasted space. When the cache is full, Content Gateway removes stale data.

Content Gateway maintains a small RAM cache of popular objects. This RAM cache serves the most popular objects as fast as possible and reduces load on disks, especially during temporary traffic peaks. You can configure the RAM cache size. See Changing the size of the RAM cache.