# Hot Backup

__*Hot backup*__

+ Hot backups occur as data is read and modify, with little disruption to your ability to interact with or manipulate data.
+ The system is still accessible for operations that read and modify data.
+ Data is locked in the following ways:
  + Using MVCC
  + Locking at a lower level (for example, row level)
  + No lock-down at all, so applications can continue to access data

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Hot backups occur as data is read and modify, with little disruption to your ability to interact with or manipulate data.

The system is still accessible for operations that read and modify data.

Data is locked in the following ways:
  Using MVCC
  Locking at a lower level (for example, row level)
  No lock-down at all, so applications can continue to access data

Note: Multiversion concurrency control (MVCC) is a feature of the TiDB database that uses multiple historical snapshots to maintain the consistency of concurrent data access at a certain point in time.