SYSTEMS AND METHODS FOR DURABLE DATABASE OPERATIONS IN A MEMORY-MAPPED ENVIRONMENT
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United States of America Patent
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Jul 9, 2015
app pub date -
Mar 23, 2015
filing date -
Nov 1, 2011
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Abstract
A durable memory-mapped database system includes a first memory-mapped view of a database, a second memory-mapped view of the database, a journal buffer and a journal. The first memory-mapped view of the database is a protected view and includes copies of a plurality of datafiles from the database. The second memory-mapped view of the database is a write view and includes copies of the plurality of datafiles. The journal buffer is a buffer in random access memory configured to record datafile updates. The journal is configured to periodically receive recorded datafile updates from the journal buffer.
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