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:
Dec. 13, 2011
Filed:
Dec. 13, 2007
Ioannis Cosmadopoulos, San Francisco, CA (US);
Vinod Mehra, Fremont, CA (US);
Paul James Devine, San Francisco, CA (US);
Reto Kramer, Issaquah, WA (US);
Ioannis Cosmadopoulos, San Francisco, CA (US);
Vinod Mehra, Fremont, CA (US);
Paul James Devine, San Francisco, CA (US);
Reto Kramer, Issaquah, WA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
A SIP server can be deployed in a two-tier architecture, including an engine tier for processing of SIP communications and a state tier for maintaining the state associated with these communications. The state tier can include RAM-based replicas that provide data to the engines. Some of the SIP session state can be moved to the database in order to reduce the memory requirements of the state tier. Upon determining that a transaction boundary has been reached where the session state is steady, the state replica can save the data to the database. A hint can be received from the engine tier by the state replica indicating that the state data is ready to be saved. Subsequently, the data can be removed from the state tier by nulling out the bytes of actual data, while preserving the primary key, locking and timer information so as not to impact latency.