Near real-time data center switching for client requests
US7747760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2004 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Apr 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/563
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A networked computer system provides a way to quickly switch to a backup data center when a primary data center fails. Each data center includes a redirect table that specifies a geographical area corresponding to each user. The redirect table is replicated on one or more data centers so that each data center has the same information. When a data center fails, the redirect table in one of the non-failed data centers is updated to specify a new data center for each client that used the failed data center as its primary data center. A network dispatcher recognizes that the failed data center is unavailable, and routes a request to the backup data center. Network routing logic then issues a redirection command that causes all subsequent requests from that client to be redirected directly to the backup data center.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.