Which databases use MVCC?

What is MVCC and which databases use it?

MVCC stands for Multi-Version Concurrency Control. It's a database management technique that allows multiple transactions to occur simultaneously without locking the database. Some databases that use MVCC include PostgreSQL, Oracle, and Microsoft SQL Server.

How does MVCC improve performance in databases?

MVCC improves performance by allowing read operations to occur without waiting for write operations to complete. This reduces contention and increases throughput.

Are there any downsides to using MVCC?

Yes, while MVCC can enhance performance, it can also lead to increased storage requirements due to the need to maintain multiple versions of data.

Can you give examples of use cases where MVCC is beneficial?

MVCC is particularly beneficial in high-concurrency environments, such as online transaction processing systems, where many users are reading and writing data simultaneously.