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Q.02 of 26

What's the difference between replication and sharding?

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Replication involves copying the same data to multiple nodes, while sharding involves splitting different portions of data across multiple nodes.

  • Replication: Each node contains a complete copy of the dataset

    • Node A: {user1, user2, user3}
    • Node B: {user1, user2, user3}
  • Sharding: Each node contains a subset of the data

    • Node A: {user1, user3}
    • Node B: {user2}

Replication focuses on availability and fault tolerance, while sharding focuses on horizontal scaling and performance for large datasets.

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