I spent a lot of my career working with java and the JVM. In recent years it hasn't worked for me, especially as other cross platform systems met or exceeded its promises but without legacy encumbrances (hello Dart and .NET Core). While JVM is probably never going to be my go-to for new projects, Project Valhalla is still an impressive look at how the team wants to upgrade the JVM. The stuff about primitive/value types is fascinating. One thing I never heard of before is 32-bit tearing. Basically 64-bit type operations, including reads, are not guaranteed to be atomic so can never truly be thread safe. As someone who usually writes software that uses 64-bit values that seems like a non-starter for me but they are "going back to 1995" with this limitation on primitive types for performance reasons. Anyway, interesting read and hats off to the team trying to pull this refactor of the JVM off. #java #dotnet #DartLang #ProjectValhalla https://www.infoworld.com/article/3687670/project-valhalla-a-look-inside-javas-epic-refactor.html
