Handling Failures
- In a replica set deployment, MongoDB automatically handles failover and recovery in case of primary node failure.
- When the primary node becomes unavailable, an election process is triggered to select a new primary node from the available secondary nodes.
- Automatic Node Recovery: In addition to handling failover, MongoDB replica sets also support automatic node recovery. If a secondary node becomes unavailable due to network issues or maintenance, MongoDB will automatically attempt to reconnect the node once it becomes available again. This helps ensure that the replica set remains fully operational and can quickly recover from temporary node failures.
- Data Synchronization: Replica sets in MongoDB ensure that data is synchronized across all nodes in the set. When data is written to the primary node, it is replicated to all secondary nodes, ensuring that each node has an identical copy of the data. This synchronization process helps maintain data consistency and availability across the replica set.
Replica Set Deployment in MongoDB
Replica sets in MongoDB provide high availability and data redundancy. It is maintaining multiple copies of data across multiple servers. In this article, we’ll explore the concept of replica set deployment by discussing its importance, architecture, and deployment process also providing practical examples with outputs to understand the concept effectively.