Java 19 Is Out

This page summarizes the projects mentioned and recommended in the original post on news.ycombinator.com

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  • graalvm-ce-dev-builds

    GraalVM Dev Build Downloads

    GraalVM JDK19 dev builds are available at https://github.com/graalvm/graalvm-ce-dev-builds/releases/la....

  • ZIO

    ZIO — A type-safe, composable library for async and concurrent programming in Scala

    I would use Scala. I like FP and Scala comes with some awesome libraries for concurrent/async programming like Cats Effect or ZIO. Good choice for creating modern style micro-services to be run in the cloud (or even macro-services, Scala has a powerful module system, so it's made to handle large codebases).

    https://typelevel.org/cats-effect/

    https://zio.dev/

    The language, the community and customs are great. You don't have to worry about nulls, things are immutable by default, domain modelling with ADTs and patter matching is pure joy.

    The tooling available is from good to great and Scala is big enough that there are good libraries for typical if not vast majority of stuff and Java libs as a reliable fallback.

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  • cats-effect

    The pure asynchronous runtime for Scala

    I would use Scala. I like FP and Scala comes with some awesome libraries for concurrent/async programming like Cats Effect or ZIO. Good choice for creating modern style micro-services to be run in the cloud (or even macro-services, Scala has a powerful module system, so it's made to handle large codebases).

    https://typelevel.org/cats-effect/

    https://zio.dev/

    The language, the community and customs are great. You don't have to worry about nulls, things are immutable by default, domain modelling with ADTs and patter matching is pure joy.

    The tooling available is from good to great and Scala is big enough that there are good libraries for typical if not vast majority of stuff and Java libs as a reliable fallback.

  • may

    rust stackful coroutine library

    1. Library creators do not want to have to deal with the headache over managing multiple runtime libraries and also between sync/async. IMO this is going to make Rust's library offerings very fractured, to the point where we will either be stuck on a legacy runtime for a long time or the hype for Rust will sizzle out because it's too difficult to write good code

    2. Tokio has the best support right now but Tokio is very difficult to write libraries for and may not be the best designed async library. Monoio looks like a very good design and may be the best option for web servers because you don't have to deal with Send and Sync.

    3. This method usually works but for async they should have been more opinionated. Stackfull coroutines line [May](https://github.com/Xudong-Huang/may) would have worked best for 99% of the use cases and maybe there could be a separate no-cost async setup for embedded. But trying to have both under the same async paradigm is causing huge issues.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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