MongoDB Documentation, Release 3.0.4 – $min and $max operators that perform conditional update depending on the relative size of the specified value and the current value of a field. – $push operator has enhanced support for the $sort , $slice , and $each modifiers and supports a new $position modifier. – $currentDate operator to set the value of a field to the current date. • The $mul operator for multiplicative increments for insert and update operations. See also: New Write Operation Protocol See also: MSI Package for MongoDB Available for Windows Security Improvements – Prompt for passphrase (page 345) by mongod or mongos at startup. – MongoDB Tools (page 350) support connections to mongod and mongos instances using SSL connec- tions. – Rolling upgrades of clusters (page 350) to use SSL. Chapter 12. Release Notes 852 • Enhanced SSL Support: • x.509 certificate authentication for client authentication (page 361) as well as for internal authentication (page 363) of sharded and/or replica set cluster members. x.509 authentication is only available for deploy- ments using SSL. • Global user management, which stores all user and user-defined role data in the admin database and provides a new set of commands for managing users and roles. • A new authorization model (page 324) that provides the ability to create custom User-Defined Roles (page 325) and the ability to specify user privileges at a collection-level granularity. MongoDB 2.6 enhances support for secure deployments through improved SSL support, x.509-based authentication, an improved authorization system with more granular controls, as well as centralized credential storage, and improved user management tools. Specifically these changes include: MongoDB now distributes MSI packages for Microsoft Windows. This is the recommended method for MongoDB installation under Windows. Write Method Acknowledgements (page 857) The mongo shell now includes methods to perform bulk-write operations. See Bulk() for more information. MongoDB 2.6 adds the write commands insert , update , and delete , which provide the basis for the improved bulk insert. All officially supported MongoDB drivers support the new write commands. A new write protocol integrates write operations with write concerns. The protocol also provides improved support for bulk operations. Update Operator Syntax Validation (page 861)