GraalVM for JDK 21
We tried to use it to improve AWS lambda startup times but desisted as it was a pain to use it with an existing app.
 It required too many tweaks as there are waay too many things that rely on reflection :(Things that broke include:
JSON (de)serialization using Jackson, validations using hibernate, validator, AWS SDK, and even simpler libs like picocli...It could be quite useful for a set of simpler apps though