Write Lock

Definitions

1. An exclusive lock acquired on a resource — such as a database row, file, or memory region — that prevents any other thread or process from reading or writing to it until the lock is released, ensuring data consistency during mutation.

   In plain English: A reservation that gives one process sole access to change a piece of data, making everyone else wait their turn.

   Example: "The transaction is holding a write lock on that row, so your SELECT is blocking until it commits."

Related Terms

• MVCC
• stored procedure
• Snapshot Isolation
• Read Lock
• Read-Write Lock
• ReadWriteLock
• Spin Lock
• Synchronized