Stream Dependent Caching

Abstract

Caching has been successfully implemented on the Internet to reduce workload on the content server and the Internet. We have seen in the last chapter how the cache replacement methods are adapted for multimedia objects in memory caching. In this chapter, we shall show how the caching is tailored to provide better performance for continuous request streams. Even though caching reduces the access latency when there are cache hits, there are chances that cache misses occur. When cache misses occur, the request stream is sent through the network to the remote storage devices. The requests are then served at the remote storage devices. The requested multimedia objects are retrieved from the storage devices, delivered through the network to the client. The cache content will also be modified to store the accessed object.