.NET Driver Version 2.13.0 Release Notes

This is the general availability release for the 2.13.0 version of the driver.

The main new features in 2.13.0 include:

• Load-balanced mode for Atlas Serverless
• Versioned MongoDB API for Drivers
• Implemented change stream oplog parsing code for delta oplog entries
• Snapshot reads on secondaries
• Support for creating time-series collections
• Permit dots and dollars in field names
• Improved error messages from document validation
• Better ExpandoObject support
• estimatedDocumentCount() now uses the $collStats aggregation stage instead of the count command
• Reduced lock contention in BsonSerializer.LookupActualType
• slaveOk connection string option removed; use readPreference instead

An online version of these release notes is available at:

https://github.com/mongodb/mongo-csharp-driver/blob/master/Release%20Notes/Release%20Notes%20v2.13.0.md

The full list of JIRA issues that are resolved in this release is available at:

https://jira.mongodb.org/issues/?jql=project%20%3D%20CSHARP%20AND%20fixVersion%20%3D%202.13.0%20ORDER%20BY%20key%20ASC

Documentation on the .NET driver can be found at:

https://docs.mongodb.com/drivers/csharp/