Please use the form below to provide your feedback. Because your feedback is valuable to us, the information you submit in this form is recorded in our issue tracking system (JIRA), which is publicly available. You can track the status of your feedback using the ticket number displayed in the dialog once you submit the form.

Differences between Scala 2 and 3 SDK versions

      +
      The Scala 3 version of the SDK has some differences from the Scala 2 versions. But we expect the majority of Scala 2 applications will be able to migrate to Scala 3 and the Scala 3 version of the SDK with minimal or even no differences.

      If any of the following changes impact you as either an existing Scala 2 SDK user or an interested Scala 3 user, then please let us know. For some of these migrations we can offer alternative approaches, or discuss re-adding desired functionality.

      The Scala 3 version of the SDK:

      • Does not carry forward support for the Reactor API, as the Scala Reactor Extensions library that it depends on is long end-of-life. The Future API offers most of the same functionality while being considerably easier to use, and more Scala-centric. It is also easily adapted to other Scala libraries such as Cats Effect and ZIO.

      • Does not carry forward the built-in support for JSON libraries (Circe, json4s, etc.), as this has increasingly become problematic to maintain as those libraries migrate to new majors.

      • Does not carry forward support for views, analytics, replica reads, management operations, and datastructures.

      • There are two overloads for most API methods, one that takes an options block, and one that tries to be a convenience method offering a few popular settings. The latter is removed in the Scala 3 version, significantly simplifying the API.