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MongoDB C++ Driver

On this page

  • Introduction
  • Installation
  • Connect to MongoDB Atlas
  • Connect to a MongoDB Server on Your Local Machine
  • Compatibility

The MongoDB C++ Driver is the official client library for C++ applications using the C++11 (or later) standard.

See Installing the mongocxx driver.

To connect to a MongoDB Atlas cluster, use the Atlas connection string for your cluster:

#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
//...
mongocxx::instance inst{}; // This should be done only once.
mongocxx::client conn{
mongocxx::uri{
"mongodb+srv://<username>:<password>@<cluster-url>/test?retryWrites=true&w=majority"
}
};
mongocxx::database db = conn["test"];
Note

For information about connecting to Atlas Serverless, see the Serverless Instance Limitations page for the minimum driver version you need.

If you need to run a MongoDB server on your local machine for development purposes instead of using an Atlas cluster, you need to complete the following:

  1. Download the Community or Enterprise version of MongoDB Server.
  2. Install and configure MongoDB Server.
  3. Start the server.
Important

Always secure your MongoDB server from malicious attacks. See our Security Checklist for a list of security recommendations.

After you successfully start your MongoDB server, specify your connection string in your driver connection code.

If your MongoDB Server is running locally, you can use the connection string "mongodb://localhost:<port>" where <port> is the port number you configured your server to listen for incoming connections.

If you need to specify a different hostname or IP address, see our Server Manual entry on Connection Strings.

To test whether you can connect to your server, replace the connection string in the Connect to MongoDB Atlas code example and run it.

C++ Driver Version
MongoDB 5.1
MongoDB 5.0
MongoDB 4.4
MongoDB 4.2
MongoDB 4.0
MongoDB 3.6
MongoDB 3.4
MongoDB 3.2
MongoDB 3.0
MongoDB 2.6
MongoDB 2.4
3.6

3.5

3.4

3.3

3.2

3.1

3.0

The driver does not support older versions of MongoDB.

C++ Driver Version
C++14
C++11
C++03
3.x

1.x

For more information on how to read the compatibility tables, see our guide on MongoDB Compatibility Tables.

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