Method and system for load balancing and management
US6560717B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1999 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Dec 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2209/5019
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer system for a web site uses load balancing of new sessions based on measurements and estimates of past, present, and future performance, using the average time each application server takes to respond to a request (the latency) and the number of active sessions on each application server. Generally, once assigned to a session, an application server handles all future requests relating to that session. However, if the load or performance of an application server becomes sufficiently degraded, a failover mechanism causes future requests to be handled by a different application server until the performance improves. Under extreme circumstances, an application server will be restarted. If a web or HTTP server is unable to have requests served by any application server, future requests may be redirected to another web server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.