Multiversion concurrency control (MCC or MVCC), is a non-locking concurrency control method commonly used by database management systems to provide concurrent access to the database and in programming languages to implement transactional memory.[1] Without concurrency control, if someone is reading from a database at the same time as someone else is writing to it, it is possible that the reader wi
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databaseとmvccに関するrawwellのブックマーク (1)
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rawwell 2009/05/29
"The obvious drawback to this system is the cost of storing multiple versions of objects in the database. On the other hand reads are never blocked, which can be important for workloads mostly involving reading values from the database. MVCC is particularly adept at implementing true snapshot isolat- database
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