Method and system for distributing load by redirecting traffic
US7543061B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2003 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Nov 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1034
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a system for servers to redirect client requests to other servers in order to distribute client traffic among the servers. A client is assigned to a server although the client may be unaware of that assignment. When the client accesses a server, a server possibly identified to the client by a name service, the server checks the client's assignment. If the client is not assigned to this server, then in some scenarios this server redirects the client to its assigned server. The client responds by sending its request to the assigned server. In other scenarios, the first server accessed by the client proxies the client's traffic to the assigned server. A database is kept of client-to-server assignments. If the present load distribution is less than ideal (e.g., clients are assigned to an unavailable server), then the assignment database is updated to reflect how the load should be distributed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.