Multiple cache communication
US6427187B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1998 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention provides a method and system for operating multiple communicating caches. Between caches, unnecessary transmission of repeated information is substantially reduced. Each cache maintains information to improve the collective operation of the system of multiple communicating caches. This can include information about the likely contents of each other cache, or about the behavior of client devices or server devices coupled to other caches in the system. Pairs of communicating caches substantially compress transmitted information. This includes both reliable compression, in which the receiving cache can reliably identify the compressed information in response to the message, and unreliable compression, in which the receiving cache will sometimes be unable to identify the compressed information. A first cache refrains from unnecessarily transmitting the same information to a second cache when each already has a copy. This includes both maintaining a record at a first cache of information likely to be stored at a second cache, and transmitting a relatively short identifier for that information in place of the information itself. A set of caches are disposed in a directed gr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.