System Designhard

What strategies can you employ to ensure database consistency in a distributed system?

Explain the approaches to maintain data integrity across distributed databases.

#Distributed Systems#Database#Consistency

Answer

  1. Use Consensus Algorithms:
    • Implement consensus protocols like Paxos or Raft to agree on data changes among distributed nodes.
  2. Leverage Two-Phase Commit (2PC):
    • Ensure that all participants in a transaction agree before committing.
  3. Eventual Consistency:
    • Accept temporary inconsistencies for improved performance, ensuring eventual convergence to a consistent state.
  4. Distributed Transactions:
    • Use tools like Saga patterns for managing long-running transactions across microservices.
  5. Data Versioning:
    • Keep historical versions of data to resolve conflicts and enhance recovery.
  6. Regular Backups and Monitoring:
    • Monitor database states and perform backups to prevent data loss during failures.

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