What is a Replica Set in MongoDB?

1.	What is a Replica Set in MongoDB?
Answer» To keep identical copies of your data on multiple servers, we use REPLICATION. It is RECOMMENDED for all production deployments. Use replication to keep your application running and your data safe, even if something happens to one or more of your servers. Such replication can be created by a REPLICA set with MongoDB. A replica set is a GROUP of servers with one primary, the server taking writes, and multiple secondaries, servers that keep copies of the primary’s data. If the primary crashes, the secondaries can elect a new primary from amongst themselves.

Answer»

To keep identical copies of your data on multiple servers, we use REPLICATION. It is RECOMMENDED for all production deployments. Use replication to keep your application running and your data safe, even if something happens to one or more of your servers.

Such replication can be created by a REPLICA set with MongoDB. A replica set is a GROUP of servers with one primary, the server taking writes, and multiple secondaries, servers that keep copies of the primary’s data. If the primary crashes, the secondaries can elect a new primary from amongst themselves.

Discussion

No Comment Found

Related InterviewSolutions

What are some utilities for backup and restore in MongoDB?
Explain the Replication Architecture in MongoDB.
What is a Replica Set in MongoDB?
Explain the concept of pipeline in the MongoDB aggregation framework.
What is the Aggregation Framework in MongoDB?
What are MongoDB Charts?
What do you mean by Transactions?