[Announcement] DataStax Node.js Driver v4.4.0

[Jorge Bay Gondra]

Hi,

I'm happy to announce the release of version 4.4.0 of the DataStax Node.js Driver for Apache Cassandra, this new version features the following noteworthy improvements:

• New default load balancing policy: The new policy attempts to fairly distribute the load based on the amount of in-flight request per hosts. The local replicas are initially shuffled and between the first two nodes in the shuffled list, the one with fewer in-flight requests is selected as coordinator.
• Support paging with async iterator: You can now use a built-in async iterator of the ResultSet to fetch large result sets.

Additionally, we open sourced all the codebase of the DSE driver and merged into a single unified driver. You can read more about this change on Chris' blog post: https://www.datastax.com/blog/2020/01/better-drivers-for-cassandra .

For DSE driver users that want to migrate to the cassandra-driver, there's a dedicated guide for that purpose.

For existing users of the Node.js Driver for Apache Cassandra there are no breaking changes and you can safely upgrade to the latest minor version.

Full list of changes in this release:

Features

• [NODEJS-549] - Unified driver: merge core and DSE drivers into a single package
• [NODEJS-574] - Refactor Driver Internals: modernize codebase and use async functions internally
• [NODEJS-563] - Support paging with async iterator
• [NODEJS-585] - Implement TCP flow control
• [NODEJS-516] - Drop support for Node.js 4 and 6 runtime

Bug fixes

• [NODEJS-583] - Default load balancing policy local hosts cache might exclude hosts that were down
• [NODEJS-584] - Exclude down hosts when preparing on all hosts
• [NODEJS-586] - Encode Date as BigInt when useBigIntAsLong is true

The new version is available on npm.

Thanks,

Jorge