Data Replication

Having a pool of identical data base servers, each holding a copy of the data, and synchronizing the data between replicas.
Data Replication architecture diagram

How does it work?

When a client requests data, one of the replicas is selected to serve the request. This horizontal scaling allows the system to handle more concurrent reads. When a write is done to a replica, the replica must make sure that the update is synchronized with the other replicas.


  • Data base replication

When should you use it?

  • When there are much more reads than writes and when the reads are big.


  • Synchronizing the updates is resource intensive