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Java's JAX-RS, DI, JPA, Metrics, Fault Tolerance, Configuration, cloud-readiness combined with minimal start times, high performance, and Go-like feel. ...and this without a dependency on a particular framework, vendor, or library. In this session, I will implement a next-generation Java backend from scratch and explain the magic on-the-fly. Java SE, reactive APIs, Helidon, Quarkus, GraalVM, MicroProfile, and a bit of Jakarta EE included.