Multi-Version Concurrency Control

Multi-Version Concurrency Control (MVCC) is a method databases use to allow multiple users to read and write data simultaneously without interference. Whenever a change is made, the database doesn’t overwrite the original data but creates a new version. This lets users access consistent snapshots of data at different times, improving performance and reducing conflicts. Think of it like editing a document with multiple copies: changes are saved separately, so everyone can work without waiting or causing errors, ensuring data stays accurate and accessible for all users.