Load balancing cooperating cache servers by shifting forwarded request
US6438652B1 · kind B1 · utility
305Cited by
14References
97Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1998 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Oct 9, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/505
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a system including a collection of cooperating cache servers, such as proxy cache servers, a request can be forwarded to a cooperating cache server if the requested object cannot be found locally. An overload condition is detected if for example, due to reference skew, some objects are in high demand by all the clients and the cache servers that contain those hot objects become overloaded due to forwarded requests. In response, the load is balanced by shifting some or all of the forwarded requests from an overloaded cache server to a less loaded one. Both centralized and distributed load balancing environments are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.