Graal VS Spring

Contrary to what vocal Kotlin advocates might believe, Kotlin only matters on Android, and that is thanks to Google pushing it no matter what.

https://spectrum.ieee.org/the-top-programming-languages-2023

https://snyk.io/reports/jvm-ecosystem-report-2021/

And even so, they had to conceed Android and Kotlin on their own, without the Java ecosystem aren't really much useful, thus ART is now updatable via Play Store, and currently supports OpenJDK 17 LTS on Android 12 and later devices.

As for your question regarding numbers, mostly Java 74.6%, C++ 13.7%, on the OpenJDK, other JVM implementations differ, e.g. GraalVM is mostly Java 91.8%, C 3.6%.

https://github.com/openjdk/jdk

https://github.com/oracle/graal

Two examples from many others, https://en.wikipedia.org/wiki/List_of_Java_virtual_machines

Pkl was built using the GraalVM Truffle framework. So it supports runtime compilation using Futurama Projections. We have been working with Apple on this for a while, and I am quite happy that we can finally read the sources!

https://github.com/oracle/graal/tree/master/truffle

Disclaimer: graalvm dev here.

That's pretty interesting. It's not as aggressive as Bee sounds, but the Espresso JVM is somewhat similar in concept. It's a full blown JVM written in Java with all the mod cons, which can either be compiled ahead of time down to memory-efficient native code giving something similar to a JVM written in C++, or run itself as a Java application on top of another JVM. In the latter mode it obviously doesn't achieve top-tier performance, but the advantage is you can easily hack on it using all the regular Java tools, including hotswapping using the debugger.

When run like this, the bytecode interpreter, runtime system and JIT compiler are all regular Java that can be debugged, edited, explored in the IDE, recompiled quickly and so on. Only the GC is provided by the host system. If you compile it to native code, the GC is also written in Java (with some special conventions to allow for convenient direct memory access).

What's most interesting is that Espresso isn't a direct translation of what a classical C++ VM would look like. It's built on the Truffle framework, so the code is extremely high level compared to traditional VM code. Details like how exactly transitions between the interpreter/compiled code happen, how you communicate pointer maps to the GC and so on are all abstracted away. You don't even have to invoke the JIT compiler manually, that's done for you too. The only code Espresso really needs is that which defines the semantics of the Java bytecode language and associated tools like the JDWP debugger protocol.

https://github.com/oracle/graal/tree/master/espresso

This design makes it easy to experiment with new VM features that would be too difficult or expensive to implement otherwise. For example it implements full hotswap capability that lets you arbitrarily redefine code and data on the fly. Espresso can also fully self-host recursively without limit, meaning you can achieve something like what's described in the paper by running Espresso on top of Espresso.

I'm also using GraalVM if that's of any help.

Quarkus is one of Java frameworks for microservices development and cloud-native deployment. It is developed as container-first stack and working with GraalVM and HotSpot virtual machines (VM).

Apologies, I didn't mean to imply DCEVM went poof, just that I was sad it didn't make it into OpenJDK so one need not do JDK silliness between the production one and the "debugging one" since my experience is that's an absolutely stellar way to produce Heisenbugs

And I'll be straight: Graal scares me 'cause Oracle but I just checked and it looks to the casual observer that it's straight-up GPLv2 now so maybe my fears need revisiting: https://github.com/oracle/graal/blob/vm-23.1.0/LICENSE

> to be compiled to a single executable is a strength that Java does not have

I think this is very outdated claim: https://www.graalvm.org/

https://github.com/oracle/graal/issues/7182

1. Spring Framework The Spring Framework is a popular Java framework used for building enterprise-level applications. This repository contains the source code for the framework and related projects such as Spring Boot and Spring Security. https://github.com/spring-projects/spring-framework

This interface is a simplified version of real caching abstractions from Java technologies such as the ones from Spring or JCache (JSR-107). Both are part of quite complex solutions, having more generic types and different capabilities. Also, annotations would be preferred to using Cache directly in most Java applications.

Cross-post: Controller code using Unconfined Dispatcher #32032

Mitre really lost a lot of respect with CVE-2016-1000027. Every few weeks a warning that any SpringBoot 2.x project has a CVSS 9.8, which causes all sorts of heartache for those of us bound to CVE remediation. Every blasted security tool reports this one. Spring reviewed and rejected, as did our very, very large organization. Comically, this has become the CVE we use to see how our tools allow us to white/black list entries.

Thank god Spring dropped this interface in the Framework 6.x / Boot 3.x release, and the end for non-commercial support is this year for the old stuff.

https://github.com/spring-projects/spring-framework/issues/2...

Referring to https://github.com/spring-projects/spring-framework/blob/main/spring-web/src/main/java/org/springframework/web/bind/annotation/GetMapping.java, the value could have got assigned to any of the other members like name, path, params, etc. Is there any logic involved that enables the single value passed to the GetMapping annotation to be assigned to the value member?

This one. In short, JMS listeners stopped working randomly (of course only on Saturdays, and only under load), but at first we didn't know that and suspected the message broker at fault. We had quite extensive logging, but no observability on the broker. Can't remember all the details, but eventually we figured out it was the listener container, and I could reproduce it after debugging deeply into Spring code during a load test.

GitHub Stars: 51 K GitHub Link: https://github.com/spring-projects/spring-framework

It still has, but it is more of "imaginary" one (https://github.com/spring-projects/spring-framework/issues/24434).