This will be huge for getting Scala running on AWS Lambda. The cold-start times for JVM apps is just ridiculous and makes Lambda/API gateway essentially unusable for anything written on the JVM.
Scala Native v0.1
71–80 of 254 posts
Re: Scala Native v0.1
#72Earlier quoted context omitted.
Never touch a running system ;) Scala on JVM is much more tested than the new shiny thing. Also don't expect improved performance... many people think that the JVM is bloated and makes programs slower (this is mostly not true). The downsides of the JVM are more memory consumption/footprint (when you have e.g. small servers or micro instances) and the cold startup time of the JVM itself (which is not relevant on a ser…
> the cold startup time of the JVM itself (which is not relevant on a server in comparison to desktop Java apps). I disagree somewhat with this. We found that when we started writing microservices in languages that are not java, the short startup time changed how we did some error handling. For errors where we say lose connection to the database, or rabbitmq, we much rather have the nodejs-process die and restart, th…
> For errors where we say lose connection to the database, or rabbitmq, we much rather have the nodejs-process die and restart, than try to construct reconnect logic.
This sounds like a very Erlang-ish way to handle the problem. Another advantage is that if the server/process is in some weird state that's causing problems, killing and restarting it lets you clear out the broken state, and get back into the state that it's most likely been tested under.
Re: Scala Native v0.1
#73That's a great news ! We are exclusively using scala at work for back end and I wonder if it could be interesting to switch new projects to scala native. Did you test scala native against well known and massive open source scala project ? Did the performance improved or regress ? Did you wrote a brand new scala compiler for native code ?
Never touch a running system ;) Scala on JVM is much more tested than the new shiny thing. Also don't expect improved performance... many people think that the JVM is bloated and makes programs slower (this is mostly not true). The downsides of the JVM are more memory consumption/footprint (when you have e.g. small servers or micro instances) and the cold startup time of the JVM itself (which is not relevant on a ser…
I'm interested in building CLIs with this.
Re: Scala Native v0.1
#74Earlier quoted context omitted.
I think the Scala community's aims have been higher than what you've suggested for a while. For example, from what I've seen, Scala.js has been wildly successful, yet according to you it should never have existed. Scala.js lets you run Scala code on javascript-based VM's and provides full integration with the underlying platform and libraries. Scala native looks to be another attempt to expand Scala's reach into new…
Define "wildly successful"... I can't name a single company or project that uses Scala.js.
There is a small list under "Built with Scala.js" here: https://www.scala-js.org/community/. And that's only for the public facing apps of companies who have explicitly sent a PR to the website to add themselves to the list. Other companies use Scala.js for internal tools.
Re: Scala Native v0.1
#75That's a great news ! We are exclusively using scala at work for back end and I wonder if it could be interesting to switch new projects to scala native. Did you test scala native against well known and massive open source scala project ? Did the performance improved or regress ? Did you wrote a brand new scala compiler for native code ?
I think for Server-Application Scala on the JVM will probably beat Scala-Native. The benefits of Scala-Native over Scala JVM are: - faster startup time - (drastically) lower memory footprint - fine hand-tuning of you application All these things are not super important in server-applications. For example Java trades memory for throughput (higher memory footprint, but also higher throughput. These usually go hand in h…
In general (not for server apps), two major benefits of Scala Native are:
- Predictable latency if desired (optional GC)
- Very low call overhead for C ABI
The following comparison is also interesting, with a JSON serialization example in Swift outpacing Spring/Java by a factor of ten... This is also running on Linux instead of macOS.
https://medium.com/@qutheory/server-side-swift-vs-the-other-...
Re: Scala Native v0.1
#76so dream comes true! P.S. I think this is related to rust, in a sense before Rust there was no serious competitor to C/C++, but after seeing what Rust doing to C/C++ I think there will be more native language to compete with in low level area.
Between the "scripty" GC agility of Golang and all the impressive low level benefits that Rust is enjoying from folding memory management into the type system, I suspect that Scala native will be a difficult sell.
On the other hand, the new targets (js and native) might make Scala more interesting to Java pragmatists who don't care much about going functional but would not mind writing Java in a more streamlined syntax.
Re: Scala Native v0.1
#77Will macros work with Scala Native, as they do with ScalaJs? (I believe that compile-time metaprogramming is the way forward, especially if the target doesn't support reflection or dynamic code loading).
If i recall correctly, they are planning to (or have already) remove macros in a newer version of Scala.
Re: Scala Native v0.1
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Re: Scala Native v0.1
#79Unfortunately, this requires an existing Scala compiler to build, so it won't be useful as a bootstrap compiler for Scala on the JVM. Does anyone here know of an alternative implementation of Scala that could be used to build the libraries and tools of the reference implementation from source?
It is a problem that many compilers cannot be bootstrapped from source without a trusted binary of a previous release.
Re: Scala Native v0.1
#80This will be huge for getting Scala running on AWS Lambda. The cold-start times for JVM apps is just ridiculous and makes Lambda/API gateway essentially unusable for anything written on the JVM.
Actually, there are people using Scala.js to run Scala on AWS lambda, precisely for that reason.
* https://github.com/tptodorov/aws-lambda-scalajs
* http://underscore.io/blog/posts/2016/03/21/serverless-scale-...