junit5-looming
project-loom-c5m
| junit5-looming | project-loom-c5m | |
|---|---|---|
| 2 | 16 | |
| 21 | 350 | |
| - | - | |
| 4.7 | 0.0 | |
| 7 months ago | about 2 years ago | |
| Java | Java | |
| Apache License 2.0 | MIT License |
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junit5-looming
project-loom-c5m
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Java 21: The Nice, the Meh, and the Momentous
It is not. Blocking IO (with some exceptions mentioned in the JEP) will automatically be translated by the runtime into non-blocking IO when it occurs on virtual threads, and no OS threads will be blocked. You can have a million threads blocking on a million sockets (obviously without creating a million OS threads): https://github.com/ebarlas/project-loom-c5m
You can't do that with thread pools. You could achieve that scalability with async code, but then observability tools will not be able to track the IO operations and who initiated them, but with virtual threads you'll see exactly what business operation is doing what IO and why.
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Don’t call it a comeback: Why Java is still champ
That might change in JDK 21 (with virtual threads). See this https://github.com/ebarlas/project-loom-c5m . It achieve 5 million persistent connections (again depends on the server capacity and kernal tuning) using normal simple blocking code (https://github.com/ebarlas/project-loom-c5m/blob/main/src/main/java/loomtest/EchoServer.java) . It's a far better better programming model compared to JS async/await.
- Project loom + valhalla + graalvm = Java on steroids
- Distilling the Real Cost of Production Garbage Collectors
- Achieving 5M persistent connections with Project Loom virtual threads
- Experiment to achieve 5M persistent connections with Project Loom (Java)
- What is the current state of the art for efficiently handling blocking requests in Java/Spring?
What are some alternatives?
Akka - Build highly concurrent, distributed, and resilient message-driven applications on the JVM
jvm-tail-recursion - Optimizer library for tail recursive calls in Java bytecode
remove-recursion-inspection - Intellij IDEA inspection for automatic recursion detection and removal
remove-recursion-insp
Reactive Streams - Reactive Streams Specification for the JVM
qbicc - Experimental static compiler for Java programs.
project-loom-comparison - A comparison of different methods for achieving scalable concurrency in Java
Jooby - The modular web framework for Java and Kotlin
pidove
ktor - Framework for quickly creating connected applications in Kotlin with minimal effort
Graal - GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
jpa2ddl - JPA Schema Generator Plugin