Effects types in Scala - how to choose one
summary
Explains why Scala standard futures are already running (non-cancelable) while Twitter futures are cancelable, and compares Scalaz Task, Monix Task, cats-effect IO and ZIO, claiming cats-effect supports cancelable IO and runs on JVM executors or JS event loop. Notes performance is “neck-to-neck” between cats-effect and Scalaz IO, shows four Hello World implementations across libs, demonstrates wrapping a Future in an IO to defer evaluation and interoperate between effect types.
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chapters (7)
- 0:00Introduction to effects
- 3:11Why not use Futures
- 9:12Scala IO and Task
- 12:07Cats Effect IO
- 14:14ZIO IO and purity
- 16:44Interoperability between types
- 19:17Demo and examples
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