about:cache

about:cache

Firefox, like many programs, caches information both to memory and to the disk. This is done for performance reasons. With about:cache, you can see exactly what has been cached, and where.

Figure 9.3 shows the root cache statistics page. There are two subpages with additional information.

Figure 9.3. The root cache statistics page gives overall information. The links on this page are used to retrieve specific entries.

There are two subpages in about:cache. The first displays entries in the memory cache, whereas the second one displays entries in the disk cache. Both cache sizes can be configured using about:config (browser.cache.disk.capacity and browser.cache.memory.capacity).