It is my pleasure to announce the second beta release of the MongoDB C driver 1.2.0. It includes features and bugfixes developed since 1.2.0-beta. Get it here:

https://github.com/mongodb/mongo-c-driver/releases/tag/1.2.0-beta1

New features:

• Set mongoc_client_pool_t's size with mongoc_client_pool_min_size() and mongoc_client_pool_max_size().
• The write concern "w=-1" is now documented as obsolete.
• Abundant fixes and additions to the documentation, beyond those in the previous beta.

Notable bugs fixed:

• Crashes and races in several replica set scenarios.
• The driver now uses the server's maxWireVersion to avoid an error and extra round-trip when executing aggregations on MongoDB 2.4 and older.
• Fixed network error handling in multiple code paths.
• connectTimeoutMS limits the time the driver can spend reconnecting to servers in single-threaded (non-pooled) mode with serverSelectionTryOnce.

Version 1.2.0 final will be a stable release with additive ABI changes and bugfixes. It is compatible with MongoDB version 2.4 and later.

Thanks to everyone who contributed to this version of libmongoc.

• A. Jesse Jiryu Davis
• Hannes Magnusson
• Manuel Schoenlaub
• Kyle Suarez
• Remi Collet

I hope you'll try this beta and let me know how it goes. Open a ticket in our bug tracker in the "CDRIVER" project if you find an issue. If you try it and it goes well, email me! I'm jesse@mongodb.com. I'd love to hear from you, and I need to know how the beta period is going for libmongoc users.

Peace,

A. Jesse Jiryu Davis

Image: Clive Varley