My question was more about figuring out if Julia can be a good candidate, not like writing off Java or C++. Something when you build things for fun, for persona

My question was more about figuring out if Julia can be a good candidate, not like writing off Java or C++. Something when you build things for fun, for personal project, for prototype, or research project. If I am a Chief Engineer / CTO of a company, and need to choose a language for Yet Another data platform, I would definitely look first at Java / Kotlin / Scala for implementation - they are a proven pragmatic choice for such tasks. If there are memory and garbage collection concerns of the former, I would look at C++ or Rust (still risky for staffing). What I like in Julia is its expressiveness, and that it was built for writing maths and computations. So it's a great candidate for top level libraries above core components - it may be a reasonable choice for a business now. But Julia promises good performance as well. Therefore, if one does not have very strict requirements to avoid GC it may look like an interesting idea to stick with the same language for the core components. Here was my question above :)