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Data Center Awareness

MongoDB provides a number of features that allow application developers and database administrators to customize the behavior of a sharded cluster or replica set deployment so that MongoDB may be more “data center aware,” or allow operational and location-based separation.

MongoDB also supports segregation based on functional parameters, to ensure that certain mongod instances are only used for reporting workloads or that certain high-frequency portions of a sharded collection only exist on specific shards.

The following documents, found either in this section or other sections of this manual, provide information on customizing a deployment for operation- and location-based separation:

Operational Segregation in MongoDB Deployments

MongoDB lets you specify that certain application operations use certain mongod instances.

Zones

A zone represents one or more ranges of shard key values for a sharded collection. MongoDB routes reads and writes for sharded data covered by a zone only to shards inside that zone. For use in managing data distribution and deployment patterns.

Manage Shard Zones

Administrative tasks related to configuring zones in sharded clusters

Further Reading

• The Write Concern and Read Preference documents, which address capabilities related to data center awareness.
• Deploy a Geographically Redundant Replica Set.

• Operational Segregation in MongoDB Deployments
• Zones
  • Manage Shard Zones
  • Segmenting Data by Location
  • Tiered Hardware for Varying SLA or SLO
  • Segmenting Data by Application or Customer
  • Distributed Local Writes for Insert Only Workloads
• Manage Shard Zones

Additional Resource

• Whitepaper: MongoDB Multi-Data Center Deployments
• Webinar: Multi-Data Center Deployment

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