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==========
What's New
==========
What's new in 3.3
-----------------
* Supports Distributed Transactions
* Supports On-Demand Materialized Views with the $merge operator
* Supports Wildcard Indexes
* Supports Retryable Reads
* Supports MongoDB Query Language Enhancements.
* SRV Polling for Sharded Clusters
* Beta support for MongoDB Client-Side Encryption
`Full 3.3 Changes Here <https://github.com/mongodb/node-mongodb-native/releases/tag/v3.3.0>`_
What's new in 3.2
-----------------
* Supports new "Unified Topology" for resolving servers (opt in with ``useUnifiedTopology`` option for ``MongoClient``\ )
* Supports ``session.withTransaction`` helper
* Supports Asynchronous Iteration (\ ``for await...`` syntax) on cursors
* Supports Database-level Aggregations (\ ``db.aggregate(pipeline, options)``\ )
`Full 3.2 Changes Here <https://github.com/mongodb/node-mongodb-native/releases/tag/v3.2.1>`_
What's new in 3.1
-----------------
* Support for MongoDB version 4.0
* Support for Transactions
* Support for authentication with SCRAM-SHA-256
* Support for new URL parser (opt in with ``useNewUrlParser`` option for ``MongoClient``\ )
`Full 3.1 Changes Here <https://github.com/mongodb/node-mongodb-native/blob/3.1/HISTORY.md#310-2018-06-27>`_
What's new in 3.0
-----------------
* Support added for Retryable Writes
* Support added for DNS Seedlists
* Support added for Change Streams
* Support added for sessions
* ``MongoClient.connect`` now returns a ``Client`` instead of a ``DB``.
`Full 3.0 Changes Here <https://github.com/mongodb/node-mongodb-native/blob/master/CHANGES_3.0.0.md>`_
What's New in 2.3
-----------------
* Implements `Decimal128 <https://docs.mongodb.org>`_\ , a decimal
floating-point numbering format that occupies 16 bytes (128 bits).
See the :doc:`CRUD tutorial </tutorials/crud>` for an example.
What's New in 2.2
-----------------
* Redesigned Connection Pool.
* Connection close will drain any outstanding operations.
* replicaSet parameter **MUST** be specified if using MongoClient to connect to replicaset, due to SDAM specification implementation.
* Domain support disabled by default, enable with parameter **domainsEnabled** on MongoClient or on the Server/ReplSet/Mongos.
What's New in 2.1
-----------------
* Implements the new GridFS specification
* Implements support for the new 3.2 wire protocol level **find**\ , **getMore** and **killCursor** commands
* A growing/shrinking connection pool
* A worker-based connection pool which minimizes the impact of slow operations on throughput and latency when the number of slow operations is less than the number of connections in the pool
* Topology monitoring specification implementation, allowing applications to monitor the view of the topology as it changes
What's New in 2.0
-----------------
* Adherence to the SDAM (Server Discovery and Monitoring Specification)
* Implementation of the CRUD Specification
* Performance improvements
* New JS-BSON parser which replaces the C++ extension
* A new core driver on top of which you can build alternative or experimental driver APIs
* APM (Application Performance Monitoring) API
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