Invention Grant
- Patent Title: Database RAM cache
- Patent Title (中): 数据库RAM缓存
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Application No.: US11248147Application Date: 2005-10-13
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Publication No.: US07792885B2Publication Date: 2010-09-07
- Inventor: Richard Matthew Piper , Mark Christopher Pilon , Felix M. Landry
- Applicant: Richard Matthew Piper , Mark Christopher Pilon , Felix M. Landry
- Applicant Address: FR Paris
- Assignee: Alcatel Lucent
- Current Assignee: Alcatel Lucent
- Current Assignee Address: FR Paris
- Agency: Kramer & Amado P.C.
- Priority: CA2484694 20041014
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F17/30

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.
Public/Granted literature
- US20060085418A1 Database RAM cache Public/Granted day:2006-04-20
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