Ruby Weekly Issue 533: December 29, 2020

The Official Ruby 3.0 Release Post — This is the place to start if you want a quick roundup direct from the core team. We’re going to dig in more throughout the rest of this issue, but the core points are:Ruby 3.0 meets the 3x3 goal by being 3x faster than Ruby 2.0 on some benchmarks.MJIT is more mature though still not considered one size fits all. Some workloads it'll speed up significantly, others (such as Rails apps) it could even slow down.Actor-like Ractors have been (experimentally) introduced as a new concurrency abstraction.Fiber.