MongoDB C Driver 1.22.0-beta0 Released

Announcing 1.22.0-beta0 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.


Bug fixes:

  • Fix BSON_ASSERT triggered by invalid JavaScript/JSON.


Bug fixes:

  • Do not auto decrypt before emitting CommandSucceeded events.


  • Use OP_MSG if a server API version is requested.


  • Add server connectionId to command monitoring events.
  • Add support for the comment field to all helpers.
  • Support mongo_shared shared library.
  • Support pre-point-in-time change stream events.
  • Support Queryable Encryption.
  • Support ‘let’ option for multiple CRUD commands.
  • Add Key Management API functions.


  • The 5.0-compat release (1.18.0) accidentally broke estimatedDocumentCount on views by changing its implementation to use aggregate and a $collStats stage instead of the count command.
  • The new release is fixing estimatedDocumentCount on views by reverting back to using count in its implementation.
  • Due to an oversight, the count command was omitted from the Stable API in server versions 5.0.0 - 5.0.8 and 5.1.0 - 5.3.1, so users of the Stable API with estimatedDocumentCount are recommended to upgrade their MongoDB clusters to 5.0.9 or 5.3.2 (if on Atlas) or set apiStrict: false when constructing their MongoClients.


Thanks to everyone who contributed to this release.

  • Kevin Albertson
  • Jeremy Mikola
  • Colby Pike
  • Ezra Chung
  • Roberto C. Sánchez
  • Jake Molnar
  • Jesse Williamson
  • Remi Collet
  • MonkeybreadSoftware

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