Improve performance by enabling caching

Mateu uses reflection for inferring the UI. Even though the computing cost is almost negligible, we can easily avoid some cpus cycles and save some milliseconds by adding the @EnableCaching annotation to our spring boot application.

@SpringBootApplication
@EnableCaching // <-- add this annotation to save some cpu cycles
public class DemoApplication {

  public static void main(String[] args) {
    SpringApplication.run(DemoApplication.class, args);
  }

}

Mateu methods are annotated with the @Cacheable annotation here and there, wherever it makes sense.