REST Service in Spring

-> HTTP request are handled by controller.
-> @RestController over class
-> @RequestMapping("/path", METHOD=GET/POST....) over method
-> @RequestParam(value="name", defaultValue="Some Default Values") : these are query string params in url/ by default its set to required = false
-> java.util.concurrent.atomic.AtmoicLong is counter which returns specified Rest Object
-> Now converting object to JSON by MappingJackson2HttpConverter which is inside spring's Jackson2.