What's New

Updates the bson package version to 6.1.0 to expose the Decimal128.fromStringWithRounding() method. To learn more, see the v6.1.0 bson release notes.

Detects environment variables for region settings when authenticating by using the MONGODB-AWS authentication mechanism. To instruct the driver to use your region options, you must set both of the following environment variables:

• AWS_STS_REGIONAL_ENDPOINTS

• AWS_REGION

Fixes a memory leak issue caused by recursive calls to the next() method of the ChangeStream type.

Removal of support for the addUser() helper command. Use the createUser MongoDB Shell command instead.

Removal of support for the collStats operation. Use the $collStats aggregation operator instead.

The options field of the ConnectionPoolCreatedEvent type contains only the following fields, which are the non-default pool options:

• maxConnecting

• maxPoolSize

• minPoolSize

• maxIdleTimeMS

• waitQueueTimeoutMS

The driver asynchronously reads files set in the tlsCAFile and tlsCertificateKeyFile connection options when you call the MongoClient.connect() method, not when you create a MongoClient instance.

Removal of the keepAlive and keepAliveInitialDelay connection options. The value of keepAlive is permanently set to true and the value of keepAliveInitialDelay is set to 300000 milliseconds (300 seconds).

To learn how to set keepalive settings at a system level, see the Does TCP keepalive time affect MongoDB Deployments? FAQ entry in the Server manual.

Removes the following options for the Db.command() method:

• willRetryWrite

• omitReadPreference

• writeConcern

• explain

• readConcern

• collation

• maxTimeMS

• comment

• retryWrites

• dbName

• authdb

• noResponse

Although you cannot pass these options to the Db.command() method, you can still set them in the command document. To learn more, see the Command Options section of the Run a Command guide.