Saving bandwidth in transmission of compressed data

摘要

A method, system and computer program product for transmitting content across a link in a communications network. In an embodiment, the method comprises examining traffic in the network at a sender end of the link to determine if the traffic is carrying compressed content; when the traffic is carrying compressed content, decompressing at least one portion of the compressed content; and checking a cache to determine if the cache has content matching the at least one decompressed portion of the content. In an embodiment, the method further comprises when the cache has content matching the at least one decompressed portion of the content, determining an identifier associated with the at least one decompressed portion of the content; and using the identifier to reconstruct, at a receiving end of the link, the at least one decompressed portion of the content. In one embodiment, the at least one decompressed portion of the content from the traffic is replaced with an index, the index is compressed to form the associated identifier, and the associated identifier is sent to the receiving end of the link.

主权项

1. A method of transmitting content across a link in a communications network, the method comprising:
examining specified traffic in the network at a sender end of the link to determine if the traffic is carrying any compressed content; when the specified traffic is carrying compressed content, decompressing at least one portion of the compressed content to obtain decompressed content; comparing the decompressed content from the specified traffic with content of a sender cache to determine if the sender cache has content matching the decompressed content from the specified traffic; when the sender cache has content matching the decompressed content from the specified traffic, determining an identifier associated with said decompressed content from the specific traffic; and using the associated identifier to reconstruct, at a receiving end of the link, the decompressed content from the specified traffic; and wherein the using the associated identifier to reconstruct the decompressed content includes: determining an index for identifying said decompressed content; compressing said index to form the associated identifier; replacing the decompressed content from the specified traffic with the associated identifier; sending the associated identifier over the link to the receiving end of the link; and decompressing the associated identifier, at the receiving end of the link, to reconstruct the index for identifying the decompressed content from the specified traffic.