Adding Hazelcast cache to spring boot app configured as a Eureka client

Question

I am trying out a spring boot app with REST web services. I plan to use multiple instances of the same app and hence registered them as Eureka client. I have used load balacing with Zuul. This works fine. Now when I tried to add Hezelcast to the app instances, the app comes up but the hazelcast instance does not. I am stuck as to why it would not. Any help is appreciated.

This is my config class.

@Configuration
public class CacheConfig {

    @Bean
    public Config config() {            
        return new Config();
    }

}

And these are my pom dependencies.

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka</artifactId>    
        <version>1.1.5.RELEASE</version>        
    </dependency>
    <dependency>
        <groupId>com.hazelcast</groupId>
        <artifactId>hazelcast</artifactId>          
    </dependency>   
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc6</artifactId>
        <version>11.2.0.3.0</version>
    </dependency>
    <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.6.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
    </dependency>
    <dependency>
        <groupId>commons-lang</groupId>
        <artifactId>commons-lang</artifactId>
        <version>2.6</version>
    </dependency>

Adding the logs as requested.

[WARNING]
[WARNING] Some problems were encountered while building the effective settings
[WARNING] 'proxies.proxy.id' must be unique but found duplicate proxy with id optional @ C:\apache-maven-3.3.9\conf\settings.xml
[WARNING]
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building POC-REST 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.0.0:clean (default-clean) @ POC-REST ---
[INFO] Deleting c:\Workspace_Github\POC-REST\target
[INFO]
[INFO] >>> spring-boot-maven-plugin:2.0.2.RELEASE:run (default-cli) > test-compile @ POC-REST >>>
[INFO]
[INFO] --- maven-resources-plugin:3.0.1:resources (default-resources) @ POC-REST ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ POC-REST ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 52 source files to c:\Workspace_Github\POC-REST\target\classes
[INFO]
[INFO] --- maven-resources-plugin:3.0.1:testResources (default-testResources) @ POC-REST ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory c:\Workspace_Github\POC-REST\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ POC-REST ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to c:\Workspace_Github\POC-REST\target\test-classes
[INFO]
[INFO] <<< spring-boot-maven-plugin:2.0.2.RELEASE:run (default-cli) < test-compile @ POC-REST <<<
[INFO]
[INFO] --- spring-boot-maven-plugin:2.0.2.RELEASE:run (default-cli) @ POC-REST ---
2018-07-02 14:22:12.463  INFO 2892 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@1574712c: startup date [Mon Jul 02 14:22:12 EDT 2018]; root of context hierarchy
2018-07-02 14:22:12.931  INFO 2892 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2018-07-02 14:22:13.126  INFO 2892 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'configurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$a39c3820] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.2.RELEASE)

2018-07-02 14:22:18.116  INFO 2892 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3462 ms
2018-07-02 14:22:26.988  INFO 2892 --- [           main] o.s.s.web.DefaultSecurityFilterChain     : Creating filter chain: org.springframework.security.web.util.matcher.AnyRequestMatcher@1, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@377a610f, org.springframework.security.web.context.SecurityContextPersistenceFilter@31b29aea, org.springframework.security.web.header.HeaderWriterFilter@228598d, org.springframework.security.web.authentication.logout.LogoutFilter@4e4795c, com.mhf.ids_rest.jwt.CustomCorsFilter@5b5256fd, com.mhf.ids_rest.jwt.security.auth.ajax.AjaxLoginProcessingFilter@4bda7dc, com.mhf.ids_rest.jwt.security.auth.jwt.JwtTokenAuthenticationProcessingFilter@3c9d3b31, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@3a981279, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@3327dc67, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@580b47b4, org.springframework.security.web.session.SessionManagementFilter@3f1d99a8, org.springframework.security.web.access.ExceptionTranslationFilter@236d4b91, org.springframework.security.web.access.intercept.FilterSecurityInterceptor@2259c500]
2018-07-02 14:22:27.063  WARN 2892 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2018-07-02 14:22:27.074  WARN 2892 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2018-07-02 14:22:27.179  INFO 2892 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-02 14:22:27.301  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@696771bc: startup date [Mon Jul 02 14:22:14 EDT 2018]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@1574712c
2018-07-02 14:22:27.366  WARN 2892 --- [           main] aWebConfiguration$JpaWebMvcConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2018-07-02 14:22:27.414  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto public org.springframework.http.ResponseEntity<?> com.mhf.ids_rest.controller.PingController.home()
2018-07-02 14:22:27.418  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/sample-data/function2/data1/{data1}/data2/{data2}/data3/{data3}],methods=[GET],produces=[application/json]}" onto public org.springframework.http.ResponseEntity<?> com.mhf.ids_rest.controller.RestApiController.getFunction1(int,int,java.lang.String)
2018-07-02 14:22:27.419  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/sample-data/function1/data1/{data1}],methods=[GET],produces=[application/json]}" onto public org.springframework.http.ResponseEntity<?> com.mhf.ids_rest.controller.RestApiController.getFunction2(java.lang.String)
2018-07-02 14:22:27.420  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/api/me],methods=[GET]}" onto public com.mhf.ids_rest.jwt.security.model.UserContext com.mhf.ids_rest.jwt.profile.endpoint.ProfileEndpoint.get(com.mhf.ids_rest.jwt.security.auth.JwtAuthenticationToken)
2018-07-02 14:22:27.421  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/api/auth/token],methods=[GET],produces=[application/json]}" onto public com.mhf.ids_rest.jwt.security.model.token.JwtToken com.mhf.ids_rest.jwt.security.endpoint.RefreshTokenEndpoint.refreshToken(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.io.IOException,javax.servlet.ServletException
2018-07-02 14:22:27.426  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-07-02 14:22:27.427  INFO 2892 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-07-02 14:22:27.465  INFO 2892 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-02 14:22:27.465  INFO 2892 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

Main class :

@EnableEurekaClient
@SpringBootApplication(scanBasePackages= {"com.blah.poc_rest"})
@EnableConfigurationProperties
@EnableCaching
public class POCRESTApp 
{
    public static void main( String[] args )
    {
        SpringApplication.run(POCRESTApp.class, args);
    }
}

This is my app. Am putting all three classes in the same block for convenience.

@RestController
@RequestMapping("/sample-data")
public class POCApiController { 

    @Autowired
    SampleService sampleService;    


    @RequestMapping(value="/function1/param1/{param1}", 
            method = RequestMethod.GET,
            produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<?> getData(@PathVariable("param1") String param1){        
        System.out.println("Controller called...");     
        String results = sampleService.getData(param1);
        return new ResponseEntity<String>(results, HttpStatus.OK);      
    }

}


public interface SampleService {    
    public String getData(final String param);
}


@Service
@CacheConfig(cacheNames = "sampleCachedData")
public class SampleServiceImpl implements SampleService {

    @Override
    @Cacheable
    public String getData(String param) {
        System.out.println("Service called... ");
        return "greetings"+param;
    }

}