Systems and methods for sharing compression histories between multiple devices
First Claim
1. A method for sharing compression histories among a plurality of network devices,the method comprising:
- receiving, by a first device from a second device, a data stream intended for a client, the data stream compressed according to a compression history shared between the first device and a third device;
transmitting, by the first device to the third device, a request for one or more portions of the compression history;
receiving, by the first device from the third device, the requested one or more portions of the compression history of the third device;
decompressing, by the first device, the data stream using the one or more portions of the compression history; and
transmitting the decompressed data stream to the client.
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Accused Products
Abstract
Systems and methods of storing previously transmitted data and using it to reduce bandwidth usage and accelerate future communications are described. By using algorithms to identify long compression history matches, a network device may improve compression efficiently and speed. A network device may also use application specific parsing to improve the length and number of compression history matches. Further, by sharing compression histories and compression history indexes across multiple devices, devices can utilize data previously transmitted to other devices to compress network traffic. Any combination of the systems and methods may be used to efficiently find long matches to stored data, synchronize the storage of previously sent data, and share previously sent data among one or more other devices.
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Citations
20 Claims
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1. A method for sharing compression histories among a plurality of network devices,
the method comprising: -
receiving, by a first device from a second device, a data stream intended for a client, the data stream compressed according to a compression history shared between the first device and a third device; transmitting, by the first device to the third device, a request for one or more portions of the compression history; receiving, by the first device from the third device, the requested one or more portions of the compression history of the third device; decompressing, by the first device, the data stream using the one or more portions of the compression history; and transmitting the decompressed data stream to the client. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for sharing compression histories among a plurality of network devices, the system comprising:
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a first device receiving from a second device a data stream intended for a client, the data stream compressed according to a compression history shared between the first device and a third device; wherein the first device comprises; a packet processor which transmits to the third device a request for one or more portions of the compression history and receives from the third device the requested one or more portions of the compression history of the third device, and a compression engine which decompresses the data stream using the one or more portions of the compression history; wherein the first device transmits the decompressed data stream to the client. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification