Cloud DB for MongoDB glossary

Available in VPC

There are a few terms you need to know to use Cloud DB for MongoDB. The terms and their descriptions are as follows.

Arbiter Server

Servers that can't be primary due to data not being replicated, and are involved in voting on new primary election.

Backup

A feature in Cloud DB for MongoDB that enables identification of backup information configured per server for safe storage of users' cache data in use, as well as execution of recovery from backup files.

Config Server

A separate server that exists in the sharding cluster, where data distribution metadata for each shard is stored.

Event

A feature in Cloud DB for MongoDB that enables identification of event history by collecting events that occurred in Cloud DB for MongoDB servers.

MongoDB Server

A DB server serviced on cloud environment upon installation of MongoDB with optimized settings that have been verified for a long time by NAVER services.

MongoDB Service

Group name which classifies MongoDB servers by role.

Mongos Server

A server that acts as a router in a sharding cluster.

Monitoring

A feature in Cloud DB for MongoDB that enables identification of monitoring information regarding server performance and operating system related to MongoDB servers in operation.

Primary

The main server when using the redundancy feature.

Secondary

A standby server that can be newly switched to primary in case of a failover when using the replica set or sharding cluster type.

Slow Query Log

A query that has been executed for a period longer than the specified value in log_min_duration_statement (default: 1).

Stand Alone

A standalone server that does not use the redundancy configuration.

Data sharding

A technology that distributes data to multiple DBMS to process mass data. Rather than distributing data inside DBMS, it distributes data from the outside of DBMS.

Shard

The unit of distributed data in MongoDB cluster.