• Upgrade Guide

What’s New in 2.3

Key features of the 2.3 driver include:

  • Implements Decimal128, a decimal floating-point numbering format that occupies 16 bytes (128 bits). See the CRUD tutorial for an example.

What’s New in 2.2

Key features of the 2.2 driver include:

  • 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

Key features of the 2.1 driver include:

  • 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

Key features of the 2.0 driver include:

  • 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

Driver revision history.


See the upgrading guide on how to upgrade to 2.0