Always install the latest, stable version of MongoDB. For more information on types of MongoDB releases, see MongoDB Versioning. To see changes in MongoDB releases, see the following release notes. Current Stable Release

As part of normal operation, MongoDB maintains a running log of events, including entries such as incoming connections, commands run, and issues encountered. Generally, log messages are useful for diagnosing issues, monitoring your deployment, and tuning performance. To get your log messages, you can use any of the following methods: View logs in your configured log destination. Run the getLog com

This MongoDB Wire Protocol Specification is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License. You may not use or adapt this material for any commercial purpose, such as to create a commercial database or database-as-a-service offering. The MongoDB Wire Protocol is a simple socket-based, request-response style protocol. Clients communicate with the da

The $type operator supports using these values to query fields by their BSON type. $type also supports the number alias, which matches the integer, decimal, double, and long BSON types. The $type aggregation operator returns the BSON type of its argument. The $isNumber aggregation operator returns true if its argument is a BSON integer, decimal, double, or long. To determine a field's type, see Ty

IMPORTANT: Starting in MongoDB 8.0, hedged reads are deprecated. Queries that specify the read preference nearest no longer use hedged reads by default. If you explicitly specify a hedged read, MongoDB performs a hedged read and logs a warning. Optional. A document that specifies whether to enable the use of hedged reads: { enabled: <boolean> } The enabled field defaults to true; i.e. specifying a

Welcome to the official MongoDB Documentation. Whether you're a developer, database administrator, or just starting your journey with MongoDB, our documentation provides you with the information and knowledge needed to build applications on MongoDB and the Atlas developer data platform. MongoDB Atlas → Run MongoDB on a multi-cloud developer data platform that accelerates and simplifies working wit

For details on a specific operator, including syntax and examples, click on the link to the operator's reference page. You can use the aggregation pipeline operators for deployments hosted in the following environments: MongoDB Atlas: The fully managed service for MongoDB deployments in the cloud MongoDB Enterprise: The subscription-based, self-managed version of MongoDB MongoDB Community: The sou

This document answers some common questions about MongoDB. What platforms does MongoDB support? For the list of supported platforms, see Platform Support. Is MongoDB offered as a hosted service? Yes. MongoDB Atlas is a cloud-hosted database-as-a-service. For more information, please visit MongoDB Atlas. How does a collection differ from a table? Instead of tables, a MongoDB database stores its dat

For details on a specific method, including syntax and examples, click on the link to the method's reference page. Atlas Search indexes let you query data in Atlas Search. Atlas Search indexes enable performant text search queries by mapping search terms to the documents that contain those terms. Use the following methods to manage Atlas Search indexes.

MongoDB is a document database designed for ease of application development and scaling. You can run MongoDB in the following environments: MongoDB Atlas : The fully managed service for MongoDB deployments in the cloud MongoDB Enterprise : The subscription-based, self-managed version of MongoDB MongoDB Community : The source-available, free-to-use, and self-managed version of MongoDB

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