Multiversion Concurrency Control

Multiversion Concurrency Control (MVCC) is a database management technique that allows multiple users to access and modify data simultaneously without interference. Instead of locking data, MVCC keeps several versions of each piece of data. When a user wants to read or write, the system provides the most appropriate version based on their request. This enhances performance and reduces conflicts, as readers do not block writers and vice versa. As a result, it improves the efficiency of transactions in environments with high user activity while maintaining data consistency.