What is the difference between memory cache and disk cache?
Netscape supports memory and disk cache to improve performance and reduce network traffic. When you bring a page from the network, information is stored in both caches. Netscape retrieves a page from the memory cache more quickly than from the disk cache, though retrieving from the disk cache is still faster than fetching from the network. The disk cache has the advantage of persistence. When you exit a session (quit the Netscape application), the memory cache is emptied, but the disk cache is maintained (and takes up space on your hard disk). Sometimes a cache can get confused (such as when servers provide inaccurate page modification dates). If you suspect a cache is acting improperly (such as providing stale pages) or just wish to free up space, you can clear the caches by pressing the Clear Memory Cache Now and Clear Disk Cache Now buttons in the Network | Cache panel (Clear Disk Cache Now is only on Macintosh).
