| 摘要 |
<p>Systems and methods for streaming of multimedia files over a network are described. A streaming delivery accelerator (SDA) (28, Fig. 2) receives content from a content provider (16, Fig. 2) and streams the received content to a user (12, Fig. 2). Content is streamed when a quality metric exceeds a predetermined value. A similar quality metric applies to caching and storing the received content in the SDA' cache. Methods for effective cache management are also described. The SDA can separate (Shred) the content into contiguous cache fields suitable for streaming. Also, checksums can migrate from the content file to the shredded cache fields and between different network protocols without the need for recomputing the checksums. The caching process can be iterative, with only content not previously retained in the SDA's cache being requested from the retransmitted by the content provider. The SDA can be disconnected from the content provider when sufficient content for a predetermined time of play has been received. A method for cache eviction of content no longer of interest to users is also described.</p> |
