The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 2010
Filed:
Oct. 10, 2006
Anno R. Langen, Berkeley, CA (US);
Reto Kramer, Berkeley, CA (US);
David Connelly, San Francisco, CA (US);
Rao Nasir Khan, Fremont, CA (US);
John Beatty, Redwood City, CA (US);
Ioannis Cosmadopoulos, San Francisco, CA (US);
Manoj Cheenath, San Ramon, CA (US);
Anno R. Langen, Berkeley, CA (US);
Reto Kramer, Berkeley, CA (US);
David Connelly, San Francisco, CA (US);
Rao Nasir Khan, Fremont, CA (US);
John Beatty, Redwood City, CA (US);
Ioannis Cosmadopoulos, San Francisco, CA (US);
Manoj Cheenath, San Ramon, CA (US);
BEA Systems, Inc., Redwood Shores, CA (US);
Abstract
The SIP server can be comprised of an engine tier and a state tier distributed on a cluster network. Engine nodes in the engine tier can process SIP messages and can read/write state information from/to the state tier. State tier can maintain state information in a set of partitions of one or more replicas which contain duplicate information. The engine nodes can be adapted to detect and report replica failures and the replicas can in turn be adapted to detect and report engine node failures. Replicas can detect faults with an engine node if the engine node fails to poll the replica for a specified period of time and can then report the failure. The engine node can detect failures of a replica when reading or writing state information and can report the failure to another replica, which can be responsible for updating the partition view to exclude dead replicas.