В данный момент микросервисы уже не просто вошли в мейнстрим, а являются частью "моды" и явно перегружены хайпом. Однако далеко не всегда эти сервисы действительно являются "микро" по-размеру и количеству потребляемых ресурсов. Во многих случаях это вызвано использованием в разработке таких "прожорливых" в плане ресурсов инструментов, как например Spring Boot. Микрофреймворки призваны решить эту проблему благодаря использованию ряда концепций, которые позволяют кардинально снизить потребление ресурсов и время запуска сервиса. В рамках доклада мы внимание на одного из самых сильных игроков в растущем сегменте Java микрофреймворков - Quarkus. Рассмотрим концепции, которые лежат в основе его дизайна и позволяют, по словам разработчиков, быть "супербыстрым", программную модель, возможности интеграции с остальными частями микросервисной экосистемы и некоторые другие аспекты его работы.

1. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
NEW PROFESSIONAL JAVA EVENT
MAY 30, 2020
KYIV, UKRAINE
Quarkus – make
microservices “micro”
again

2. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
WHOAMI

3. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System overview
150

4. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System overview
150 15

5. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System overview
150 15

6. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

7. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

8. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

9. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

10. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

11. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

12. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

13. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

14. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

15. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

16. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
System architecture

17. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Existing Java Microframeworks

18. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
New player - Quarkus

19. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Evaluation dimensions
• Performance - startup time

20. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Evaluation dimensions
• Performance - startup time
• Resources footprint – app size, memory footprint

21. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Evaluation dimensions
• Performance - startup time
• Resources footprint – app size, memory footprint
• Integration with rest of ecosystem

22. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Evaluation dimensions
• Performance - startup time
• Resources footprint – app size, memory footprint
• Integration with rest of ecosystem
• Development experience

23. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Performance – startup time
https://dzone.com/articles/micr
oservices-quarkus-vs-spring-boot

24. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Performance – memory footprint
https://dzone.com/articles/micr
oservices-quarkus-vs-spring-boot

25. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Extension mechanism
Extensions

26. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Extension mechanism
Extensions
Class-path
modification

27. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Extension mechanism
Extensions
Class-path
modification
Build
augmentation

28. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Extension mechanism
Extensions
Class-path
modification
Build
augmentation
Runtime init

29. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Tools under the hood
GraalVM
Gizmo
SubstrateVM
Jandex

30. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Quarkus integration pillars

31. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
RDBMS
MongoDB
DynamoDB
S3
Hibernate Panache
Business
services

32. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Business
services

33. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Business
services
Metrics Health

34. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Business
services
Open API

35. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Business
services
Eureka

36. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Business
services
Fault Tolerance

37. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microprofile fault-tolerance features
• Timeout: Defines a timeout for the execution of a service call

38. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microprofile fault-tolerance features
• Timeout: Defines a timeout for the execution of a service call
• Fallback: Provides a contingency solution when a failure occurs

39. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microprofile fault-tolerance features
• Timeout: Defines a timeout for the execution of a service call
• Fallback: Provides a contingency solution when a failure occurs
• Retry: Allows you to retry execution based on criteria

40. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microprofile fault-tolerance features
• Timeout: Defines a timeout for the execution of a service call
• Fallback: Provides a contingency solution when a failure occurs
• Retry: Allows you to retry execution based on criteria
• Bulkhead: Isolates partial service failures while the rest of the system can still
work

41. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microprofile fault-tolerance features
• Timeout: Defines a timeout for the execution of a service call
• Fallback: Provides a contingency solution when a failure occurs
• Retry: Allows you to retry execution based on criteria
• Bulkhead: Isolates partial service failures while the rest of the system can still
work
• Circuit Breaker: Defines criteria for automatic fast-fails to prevent system
degradation caused by overloading

42. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Config
Management
Business
services
Config

43. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
JWT Authentication
Oauth 2.0
OpenID Connect
Deployment
Config
Management
Business
services

44. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Config
Management
Business
services

45. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Metrics
Pull-based mechanism
Hierarchical & dimensional support
Deployment
Config
Management
Business
services

46. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Microservice concerns
Deployment
Config
Management
Business
services
OpenTracing

47. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Demo

48. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Issues
• Quarkus and GraalVM compatibility

49. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Issues
• Quarkus and GraalVM compatibility
• Limited support of CDI spec (and others?)

50. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Issues
• Quarkus and GraalVM compatibility
• Limited support of CDI spec (and others?)
• Bias towards RedHat native tools and libs

51. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Issues
• Quarkus and GraalVM compatibility
• Limited support of CDI spec (and others?)
• Bias towards RedHat native tools and libs
• Lack of official NetflixOSS extensions

52. NEW PROFESSIONAL JAVA EVENT KYIV, 2020
Conclusions

53. NEW PROFESSIONAL JAVA EVENT KYIV, 2020