A Caching and Streaming Framework for multimedia

摘要

In this paper, we explore the convergence of the caching and streaming technologies for Internet multimedia. The paper describes a design for a streaming and caching architecture to be deployed on broadband networks. The basis of the owrk is the proposed Internet wtandard, Real Time Streaming Portocol (RTSP0, likely to be the de-facto standard for web-based A/V caching and streaming, inthe near future. The proxies are all managed by an "Intellignet Agent" or "Broker"-this has been designed as an enhanced RTSP proxy server that maintains the state information that is so essential in streamig of media data. In addition, all the caching algorithms run on the broker. Having an intelligent agent or broker ensures that the "simple" caching servers can be easily embedded into the network. However, RTSP does not have the right model for doing broker based streaming/caching architecture. The work reported here is an attempt to constribute towards that end.