What is data consistency in concurrent systems?

What is data consistency in concurrent systems?

Data consistency in concurrent systems refers to the accuracy and reliability of data when multiple processes access and modify it simultaneously.

Why is it important to maintain data consistency?

Maintaining data consistency is crucial to ensure that all users see the same data at the same time, preventing errors and conflicts.

What are some common methods to achieve data consistency?

Common methods include locking mechanisms, version control, and using consensus algorithms like Paxos or Raft.

Can you explain the difference between strong and eventual consistency?

Strong consistency guarantees that all reads return the most recent write, while eventual consistency ensures that, given enough time, all updates will propagate to all nodes.