Using Java's Project Loom to build more reliable distributed systems

• BlockHound

  6 1,330 7.3 Java

  Java agent to detect blocking calls from non-blocking threads.

  

• SaaSHub

  www.saashub.com featured

  SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

  

• lucene-grep

  9 190 0.5 Clojure

  Grep-like utility based on Lucene Monitor compiled with GraalVM native-image

  - Graal native images are real. These boast a far lower startup overhead and much lower steady state memory usage for simpler applications.

  Probably my counterexample of choice is this: https://github.com/dainiusjocas/lucene-grep - it uses Lucene, probably the best search library (core of Elasticsearch, Solr, most websites), which is notoriously not simple code to implement grep-like functionality. In simple cases, they demonstrate a 30ms whole process runtime with no more than 32MB of RAM used (which looks suspiciously like a default).

  The JVM is fast becoming a bit like Postgres... one of those 'second best at everything' pieces of tech.

• loom

  10 1,870 10.0 Java

  https://openjdk.org/projects/loom (by openjdk)

  

  It's more accurate to say Loom is [a particular type of] continuations in the JVM, which can be used to implement green threads / fibers.

  You can see the implementation of VirtualThread here: https://github.com/openjdk/loom/blob/fibers/src/java.base/sh...

  This uses the internal 'one-shot delimited continuation': https://github.com/openjdk/loom/blob/fibers/src/java.base/sh...

  So, at least in principle, there is scope for other styles of concurrency to be implemented over this.

• coyote

  17 1,480 5.4 C#

  Coyote is a library and tool for testing concurrent C# code and deterministically reproducing bugs.

  

  If you're looking for similar concurrency testing in the dotnet world, checkout Coyote:

  https://microsoft.github.io/coyote/

  https://innovation.microsoft.com/en-us/exploring-project-coy...

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