Every newer Java application I've seen is just as dog slow as those older ones. Keycloak itself being a prime example — it was rewritten on top of Quarkus recen

Every newer Java application I've seen is just as dog slow as those older ones. Keycloak itself being a prime example — it was rewritten on top of Quarkus recently, and it didn't help much. You're still expected to build a second image (and maintain it — it wouldn't be a problem if you only had to it once), and it still takes 2-3 minutes to become responsive. You may have have seen those magical Java applications that both implement a decent amount of functionality (so not just a toy), and start in a couple of seconds, but the rest of us will believe it when we see it. I wonder how they're developed, it feels like a throwback to the punch-card era. While I don't have much love for Microsoft, you should take a look at dotnet. Applications written on top of dotnet (even using massive frameworks like ASP.NET + EF) actually do start in a few seconds, which is at least an order of magnitude faster than anything similar in Java.