Multiple cache communication and uncacheable objects
US6715037B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Sep 26, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for operating multiple communicating caches. Between caches, unnecessary transmission of repeated information is reduced. Pairs of communicating caches compress transmitted information, including noncacheable objects. 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. Caches are disposed in a graph structure, including a set of root caches and a set of leaf caches. Both root and leaf caches maintain noncacheable objects beyond their initial use, along with a digest of the non-cacheable objects. When a server devices returns identical information to a root cache, root caches can transmit only a digest to leaf caches, avoiding re-transmitting the entire noncacheable object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.