MongoDB Documentation, Release 3.0.4 – Require the use of strong SSL ciphers, with a minimum 128-bit key length for all connections. The strong- cipher requirement prevents an old or malicious client from forcing use of a weak cipher. • MongoDB disables the http interface by default, limiting network exposure (page 327). To enable the interface, see enabled . • MongoDB can now use index intersection (page 510) to fulfill queries supported by more than one index. • Index Filters (page 69) to limit which indexes can become the winning plan for a query. • http://docs.mongodb.org/manual/reference/method/js-plan-cache methods to view and clear the query plans (page 68) cached by the query optimizer. • MongoDB can now use count() with hint() . See count() for details. • 2dsphere indexes version 2 (page 496). • Support for MultiPoint (page 554), MultiLineString (page 555), MultiPolygon (page 555), and GeometryCollec- tion (page 556). • Support for geospatial query clauses in $or expressions. • Background index build (page 508) allowed on secondaries. If you initiate a background index build on a primary , the secondaries will replicate the index build in the background. • Automatic rebuild of interrupted index builds after a restart. – If a standalone or a primary instance terminates during an index build without a clean shutdown , mongod now restarts the index build when the instance restarts. If the instance shuts down cleanly or if a user kills the index build, the interrupted index builds do not automatically restart upon the restart of the server. – If a secondary instance terminates during an index build, the mongod instance will now restart the inter- rupted index build when the instance restarts. • ensureIndex() now wraps a new createIndex command. • The dropDups option to ensureIndex() and createIndex is deprecated. 853 12.2. Previous Stable Releases To disable this behavior, use the --noIndexBuildRetry command-line option. 2dsphere Index Version 2 (page 860), $maxDistance Changes (page 863), Deprecated $uniqueDocs (page 863), Stronger Validation of Geospatial Queries (page 863) See also: Index Build Enhancements Geospatial Enhancements Improvements Query Engine Improvements See also: New Authorization Model (page 859), SSL Certificate Hostname Validation (page 860), and Security Checklist (page 431).