What Is MVCC (Multi‑Version Concurrency Control), and How Does It Enable Concurrent Reads and Writes?

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What Is MVCC (Multi‑Version Concurrency Control), and How Does It Enable Concurrent Reads and Writes?

Multi-Version Concurrency Control (MVCC) is a database concurrency technique that maintains multiple versions of each data record to allow simultaneous reads and writes without conflicts, giving each transaction a consistent snapshot of the data.

In simple terms, reads do not block writes, and writes do not block reads under MVCC, because each user or transaction works on its own snapshot of data.

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