Spring Cache not working as a compute property

I want to use a mechanism for create a one time compute function. I try to use Spring Caching. But it does not working. Please help me to solve this problem. My code like as below,

Gradle Dependency

compile 'org.springframework.boot:spring-boot-starter-cache'

Main Class of Spring Boot Application

@SpringBootApplication
@EnableCaching
public class Application {

	public static ApplicationContext applicationContext;

	public static void main(String[] args) {
		TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
		// todo: Try to save response text and request body
		applicationContext = SpringApplication.run(Application.class, args);
	}

	@Bean
	WebMvcConfigurer webMvcConfigurer(){
		return new WebMvcConfigurer() {
			@Override
			public void addResourceHandlers(ResourceHandlerRegistry registry) {
				registry
						.addResourceHandler("/**")
						.addResourceLocations("classpath:/")
						.setCacheControl(CacheControl.maxAge(3600, TimeUnit.SECONDS).noTransform().mustRevalidate());
			}
		};
	}
}

My Coputational property and Test method

public String test(){
        return hello();
    }


    @Cacheable("hello")
    public String hello(){
        System.out.println("hello");
        return "Hello";
    }

The @Cacheable annotation caches the values when it is called from outside your @Bean so calling it from another method inside your bean will not work.

try something like

@Bean 
public class CachingBean {
    @Cacheable("hello")
    public String hello(){
        System.out.println("hello");
        return "Hello";
    }
}

@Service
public class CallerService {

  @Autowired
  private CachingBean cachingBean;

  // Setters, constructors...

  public String test(){
        return cachingBean.hello();
  }
}

And then it should work.
That's because the @Cacheable annotation creates a proxy around the method call when it is injected as a Bean, so a direct call (to an instance created directly) or an internal call are not intercepted and the caching mechanism does not even see those calls.

I still sometimes forget about it and get biten by it at the beginning :).
Cheers!