So the main takeaway from this is that JRuby can startup as fast as CRuby (with no trade-off) but it requires a bit of fiddling with the restore point.

Looking forward to try this out, is it accessible through the docker hub yet? I couldn't find the crac branch as a tag yet. https://hub.docker.com/_/jruby

Part one of a series exploring the use of OpenJDK Project CRaC (Coordinated Restore at Checkpoint) and CRIU (Checkpoint and Restore In Userspace) to improve the startup of JRuby