What are some real-world examples of MVCC?
MVCC, or Multi-Version Concurrency Control, is used in databases like PostgreSQL and Oracle. For instance, PostgreSQL uses MVCC to handle concurrent transactions without locking the database.
How does MVCC improve performance in these databases?
MVCC allows multiple transactions to read and write data simultaneously, reducing wait times and increasing throughput.
Can you give me an example of how MVCC works in a transaction?
Sure! In PostgreSQL, when a transaction updates a row, it creates a new version of that row. Other transactions can still read the old version until they commit.
What are the advantages and disadvantages of using MVCC?
Advantages include improved performance and reduced locking. Disadvantages can be increased storage requirements due to multiple versions.
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