軽量Java基盤の設計 DIコンテナに頼らない、長期保守と1秒起動の実現 JJUG CCC 2026 Spring

JJUG CCC 2026 Springの発表資料です。

Transcript

1. Ⓒ
2. • Java – DI 1 • ( ) • • • FaaS •
3. • • ICT ICTDX • :
5. Spring Framework Hibernate • Web 10 20 • EOL
6. Web • • Spring+Hibernate/Quarkus+Hibernate/JAX-RS+Hibernate/JAX-RS+DbUtils • • 100 Entity 1 20 • 400 Service Entity CRUD • 400 Controller MPA Web • 900 • • Controller
7. ※2025 / # DI 10 EntityManager 10 22 Spring Web MVC + Hibernate JVM /Native Image 20 Quarkus + Hibernate DI 8 JAX-RS/RestEasy + Hibernate ORM 2 JAX-RS/RestEasy + Commons DbUtils Quarkus 20 Quarkus
8. DI ORM DI ORM DI DI ORM
10. 1 DI • • •
11. SOLID D DIP Dependency Inversion Principle • • DIP ( ) NG OK OK
12. • DI •
13. // DI public class OrderService { // // DI public OrderService(PaymentService paymentService) { this.paymentService = paymentService; } }
14. // public class OrderService { private final PaymentService paymentService; // // ServiceLocator public OrderService() { this.paymentService = ServiceLocator.get(PaymentService.class); } }
15. DI DI DIP FW FW DI
16. DiRegistry Dependency Inversion Registry • ID • • DiRegistry DI Dependency Injection DIP Dependency Inversion Principle Composition Root
18. DiRegistry // ID public enum AppResources { APP_ENGINE_CONFIG, DB_SESSION_FACTORY, }
19. // DiRegistryBase extends public class AppRegistry extends DiRegistryBase<AppResources> { // // public final static DiProfile<AppResources> PROFILE = DiProfile.<AppResources>builder() // .resource( AppResources.DB_SESSION_FACTORY, // ID "com.example.fw.db.SessionFactoryImpl", // new String[] { "hikaricp.properties" // } ) .resource(……) .build(); }
20. public class AppRegistry extends DiRegistryBase<AppResources> { // …… public AppRegistry() { this(PROFILE); } public static AppRegistry getInstance() { return INSTANCE; } public static AppRegistry setProfile(DiProfile profile) { PROFILE = profile; } }
21. var factory = (SessionFactory) AppRegistry.getInstance().get(AppResources.DB_SESSION_FACTORY); var session = factory.openSession(); AppRegistry AppRegistry get Object AppRegistry
22. public interface DiRegistry<R> { <T> T get(R key) throws SystemException; } public abstract class DiRegistryBase<R> implements DiRegistry<R> { // // ConcurrentHashMap private final DiProfile<R> profile; public DiRegistryBase(DiProfile<R> profile) { this.profile = profile; } @Override public <T> T get(R key) throws SystemException { return (T) getResource(key); } } DiRegistry
23. public abstract class DiRegistryBase<R> implements DiRegistry<R> { // private Object getResource(R key) throws SystemException { var diResource = profile.getResources().stream() .filter(resource -> resource.getResource().equals(key)) .findFirst() .orElse(null); try { // return Class.forName(diResource.getClassName()). getConstructor(String[].class). newInstance(diResource.getArgs()); } catch (Exception e) { throw new SystemException(e); } } }
24. public abstract class AppTestBase { // static { AppRegistry.setProfile( // DiProfile.<AppResources>builder() // ...... .resource( AppResources.DB_SESSION_FACTORY, "com.example.fw.db.MockSessionFactoryImpl", new String[] {} ) .build() ); } } DiRegistry DiRegistry
25. DIP 900 20 2 1 DiRegistry DI DIP FW FW 1-2
26. • • • • • Spring Framework Spring Framework Hibernate Web jar 150MB 20MB
27. DiRegistry Spring Framework DI DiRegistry ConfigFactory ScopeManager AOP InterceptorChain
28. Spring Framework DiRegistry • Auth • JDBC • Batch/OnBach • Appserver • Template • FaaS • ……
30. EOL DiRegistry
31. • EOL DiRegistry • JPMS Java Platform Module System • JPMS • DiRegistry
32. v2 v1 EOL v1 v2
33. src/main/java/ ├─ module-info.java // JPMS ├┬ com.example.fw.mail/ // │├─ MailFactory (interface) │└─ Mail (interface) ├┬ com.example.fw.mail.javamail/ // JavaMail │├─ MailFactoryImpl │└─ MailImpl └┬ com.example.fw.mail.sesv2/ // AmazonSES ├─ MailFactoryImpl └─ MailImpl JavaMail AmazonSES Mail
34. // module-info.java module com.example.fw.mail { exports com.example.fw.mail; // // exports com.example.fw.mail.javamail // // exports com.example.fw.mail.sesv2 // opens com.example.fw.mail.javamail to com.example.fw.core; // DiRegistry javamail opens com.example.fw.mail.sesv2 to com.example.fw.core; // DiRegistry sesv2 requires jakarta.mail; requires software.amazon.awssdk.services.sesv2; } module-info.java
35. // com.example.fw.mail public interface MailFactory { Mail newMail(String mailId); } // com.example.fw.mail public interface Mail { void addTo(String mailAddress); void setSubject(String subject); void setBody(String body); void send() throws SystemException; } MailFactory Mail
36. public class MailFactoryImpl implements MailFactory { private final MailConfig config; public MailFactoryImpl(String[] args) { this.config = ConfigFactory.getConfig(args[0], MailConfig.class); } @Override public Mail newMail(String mailId) { return new MailImpl(this, mailId); } } public class MailImpl implements Mail { @Override public void send() throws SystemException { var mail = render(getMailRenderer()); getMailSender().sendMail(mail); } } JavaMail MailFactoryImpl MailImpl
37. dependencies { // Core dependencies implementation(libs.slf4j.api) // CompileOnly dependencies compileOnly(libs.jakarta.mail) compileOnly(libs.angus.mail) compileOnly(platform(libs.awssdk2.bom)) compileOnly(libs.awssdk2.ses) // RuntimeOnly dependencies runtimeOnly(libs.logback.core) runtimeOnly(libs.logback.classic) } Gradle dependencies JavaMail AmazonSES compileOnly runtimeOnly
38. public class AppRegistry extends DiRegistryBase<AppResources> { public final static DiProfile<AppResources> PROFILE = DiProfile.<AppResources>builder() // ...... .resource( AppResources.MAIL_FACTORY, // JavaMail Amazon SES "com.example.fw.mail.javamail.MailFactoryImpl", // "com.example.fw.mail.sesv2.MailFactoryImpl", new String[] { // "mail-config.yaml", } ) .build(); } DiRegistry MailFactory
39. // DiRegistry // JPMS var mailFactory = (MailFactory) AppRegistry.getInstance().get(AppResources.MAIL_FACTORY); var mail = mailFactory.newMail("HELLO_WORLD"); mail.addTo("taro@example.com"); mail.setSubject("Hello,world"); mail.setBody("Hello,world!"); mail.send(); // JavaMail
40. • • • • • • • •
41. • Java interface • Java • JPMS record enum • • • Javadoc
42. getUnsafeContext(contextName) var httpClient = AppRegistry.getInstance().get(AppResources.HTTP_CLIENT); // apacheHttpClient var apacheHttpClient = httpClient.getUnsafeContext("apacheHttpClient");
44. REST API FaaS AWS Lambda DB 1 S3 1 ( FW/Python/SpringBoot) REST API SnapStart SnapStart Lambda
45. SnapStart 30 ms 3,500 ms SnapStart 12MB 512MB FW 300 ms 1,500 ms SnapStart 0.8MB 512MB Python 30 ms 9,000 ms SnapStart 34MB 512MB SpringBoot ※ SnapStart DiRegistry 2MB JDBC 2
46. JDBC S3Client :100 400 400
47. • FaaS static • DB S3 • DiRegistry DataSource • DiRegistry • JDBC SnapStart
48. DataSource SnapStart DB TCP Stale
49. public class Application implements RequestHandler<……> { static { warmUpAndRestart(); } // static private static void warmUpAndRestart() { // Map<String, Object> input = Map.of(……); // /system/dbS3Ping getFunctionDispatcher().dispatch(input, Map.of()); // AppRegistry.getInstance().restart(); } } static warmUpAndRestart SnapStart static
50. FW Lambda 2 Python 30 ms 3,500 ms → 1,700 ms SnapStart 12MB 512MB FW 300 ms 1,500 ms SnapStart 0.8MB 512MB Python 30 ms 9,000 ms SnapStart 34MB 512MB SpringBoot ※ SnapStart DiRegistry DiRegistry
51. Java REST API Web FaaS • Tomcat AP • AP FaaS • DB AWS RDS Proxy • Java FaaS
53. • • • • • (JPMS) • FaaS •
54. • • •