What's New

Added support for the MONGODB-OIDC authentication mechanism and automatic token acquisition for Azure Identity Provider.

Added the class name to the error message reported when BsonClassMapSerializer cannot locate a matching creator.

Added a LoggedStages field to surface the MQL executed after performing a LINQ query.

Added support for overriding the "mongodb" service name with a custom one by using the srvServiceName connection option.

Improved behavior of bulk write operations to preven enumerating the requests parameter more than once.

Added the IMongoCollection.DistinctMany() method.

Added support for the latest optional arguments for the $dateFromString aggregation expression.

Added support for sorting by score in the $search aggregation stage.

Added the VectorSearchScore builder for the $vectorSearch aggregation stage.

Added support for the $in operator in Atlas Search.

Added the Mql.Exists(), Mql.IsMissing(), and Mql.IsNullOrMissing() methods for LINQ queries.

Added support for the IComparable.CompareTo() method in LINQ queries.

Added support for nested calls to the AsQueryable() method to support LINQ queries by the MongoDB Entity Framework Core Provider.

Added support for TLS 1.3.

Updated the libmongocrypt package version to 1.8.2.

Fixed a segfault in Kerberos (libgssapi) on newer Linux distributions.

Fixed a GridFS bug in which downloading a file caused an error if a larger file with the same ID had also been uploaded.

The ExceededTimeLimit server error is now retryable for both read and write operations.

When running within a function-as-a-service (FaaS) environment, such as AWS Lambda, the driver now uses the polling monitoring mechanism.

To improve MongoDB Atlas Serverless compatibility, the driver now uses OP_MSG for authentication if the server supports it.

Improvements and bug fixes to the LINQ3 integration.

Added support for aggregation bitwise operators.

Added support for the $out operator in MongoDB time series collections.

Added ChangeStreamSplitLargeEvent to handle change stream events greater than 16 MB.

Improvements and bug fixes to the LINQ3 integration.

Added support for $set and $vectorSearch aggregation stages.

Added synonym support for Atlas Search.

Reduced memory allocation when using encryption.

Added logging messages for server discovery and monitoring (SDAM) events. For more information on these events, see the MongoDB SDAM Logging and Monitoring specification.