Connection cache for highly available TCP systems with fail over connections
US6934875B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2001 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/875
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method, system and apparatus by which TCP connections may be failed-over from one system to another within a highly available network service, and appear transparent to the remote client. The connection state and ownership information of a system is broadcast within the network, so that if a first system crashes while running an application, a predetermined take-over policy causes a peer system to assume connection without loss of data such that a permanent connection has been established from the client's point of view. After the failed system has been restored to a normal state, new connections are established by the first system. A connection cache device stores connection information for use during the failover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.