Low fat backends for mobile guys

Low fat backends for mobile guys:
Develop simple backends in Java in minutes

Transcript

1. Low fat backends For mobile guys
2. Alexandru Simonescu hi@alexsimo.com @alexsimonescu http://blog.alexsimo.com “Do what you love. Love what you do.” - Ray Bradbury
3. do you really need a backend? think twice
4. mbaas sometimes do the trick
5. mbaas cons not a golden unicorn _you depend on some else infrastructure _normally can be cheap, related your needs _no full control, your data is not yours _sometimes hard to scale
6. and now what?
7. why not roll your own backend?
8. we all have a backend dev inside
9. backend cons or not :-) _custom backend is hard to develop _can be expensive _i can’t setup infrastructure _i’m just a mobile guy
10. infrastructure AWS Digital Ocean VPS Dime ~ 5€ month
11. showtime create required entities, layers and configuration
12. kickstart 1. set project metadata 2. choose dependencies 3. download 4. import in favorite IDE 5. customize and run https://start.spring.io/
13. Rest controllers Data access layer Domain entities
14. hello world controller @Controller @RequestMapping("/status") public class StatusController { @RequestMapping(value = "/", method = RequestMethod.GET) @ResponseBody public String status() { return "All looks ok from here! :-)"; } }
15. more complex controller @RestController @RequestMapping(value = "/movie") public class MovieController { @Autowired MovieRepository movieRepository; @RequestMapping(value = "/", method = RequestMethod.GET) public List<Movie> all() { return movieRepository.getAll(); } }
16. persistance entity @Data @Builder @Entity public class Actor { @Id private Integer id; private String name; }
17. data access public interface ActorRepository extends JpaRepository<Actor, Integer> { }
18. rest data access @RepositoryRestResource(collectionResourceRel = "actor", path = "actor") public interface ActorRepository extends JpaRepository<Actor, Integer> { }
19. run your backend @SpringBootApplication @Import(SecurityConfiguration.class) public class MoviecloudApplication { public static void main(String[] args) { SpringApplication.run(MoviecloudApplication.class, args); } }
20. working project https://github.com/alexsimo/backend-low-fat