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:
Sep. 07, 2010
Filed:
Oct. 13, 2005
Richard Matthew Piper, Mattawan, MI (US);
Mark Christopher Pilon, Stittsville, CA;
Felix M. Landry, Gatineau, CA;
Richard Matthew Piper, Mattawan, MI (US);
Mark Christopher Pilon, Stittsville, CA;
Felix M. Landry, Gatineau, CA;
Alcatel Lucent, Paris, FR;
Abstract
A system and method are provided for providing a shared RAM cache of a database, accessible by multiple processes. By sharing a single cache rather than local copies of the database, memory is saved and synchronization of data accessed by different processes is assured. Synchronization between the database and the shared cache is assured by using a unidirectional notification mechanism between the database and the shared cache. Client APIs within the processes search the data within the shared cache directly, rather than by making a request to a database server. Therefore server load is not affected by the number of requesting applications and data fetch time is not affected by Inter-Process Communication delay or by additional context switching. A new synchronization scheme allows multiple processes to be used in building and maintaining the cache, greatly reducing start up time.