Selgitage andmete sünkroneerimise replikatsiooni mehhanismi andmesalvestussüsteemides.

Synchronous data replication is a mechanism where data write is considered complete only after the data has been successfully written to all replicas.

How it works:

1. The client sends a write request.
2. The primary node (master) writes the data locally.
3. Then, the master sends the data to the replicas.
4. The replicas confirm the successful write.
5. After receiving confirmations from all replicas, the master informs the client of the successful completion of the operation.

Advantages:

• Ensures that all replicas contain the same data.
• Increases reliability and fault tolerance.

Disadvantages:

• Write latency increases due to waiting for confirmations.
• Requires a stable and fast network connection between nodes.

Example: in distributed databases, synchronous replication ensures data consistency between nodes in real-time.