Microservice Patterns - Implemented by Eclipse MicroProfile

Architectures based on microservices introduce new challenges for architects and developers. New patterns emerge and existing are updated to be aligned to this relatively new architectural style.

This session presents a group of patterns commonly used in microservice based architectures. Each pattern will be in explained and demoed live in a down-to-earth and easily understandable way.

Transcript

1. Microservice Patterns Implemented by Eclipse MicroProfile Ivar Grimstad
 Principal Consultant, Cybercom Sweden
2. @ivar_grimstad https://github.com/ivargrimstad https://www.linkedin.com/in/ivargrimstad
3. @ivar_grimstad #microservices Introduction The Patterns Summary
4. @ivar_grimstad #JakartaEE #EE4J
5. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE
6. @ivar_grimstad #microservices M icroProfile 2.1 October 19, 2018
7. @ivar_grimstad #microservices The Patterns
8. @ivar_grimstad #microservices 1. Microservice Architecture 2. Service per Container 3. Externalised Configuration 4. Health Check API 5. Application Metrics 6. Circuit Breaker 7. Access Token 8. Distributed Tracing
9. @ivar_grimstad #microservices
10. @ivar_grimstad #microservices Microservice Architectures #1
11. @ivar_grimstad #microservices What’s the application’s deployment architecture?
12. @ivar_grimstad #microservices Monolithic Architecture Monolithic Application
13. @ivar_grimstad #microservices Monolithic Architecture
14. @ivar_grimstad #microservices Service A Service B Service C Application Call A Call B Call C Microservice Architecture
15. @ivar_grimstad #microservices Microservice Architecture
16. @ivar_grimstad #microservices Service per Container #2
17. @ivar_grimstad #microservices How are services packaged and deployed?
18. @ivar_grimstad #microservices Application Server (Container) Service C Service B Service A Configuration A Configuration B Configuration C
19. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE Thin WAR
20. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE UberJAR
21. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE java -jar dukes.jar
22. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE Hollow JAR
23. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE java -jar dukes.jar dukes.war
24. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE Hardware Operating System JVM UberJAR Hardware Operating System JVM MicroProfile Container MicroProfile Application Hardware Operating System JVM Java EE Container Java EE Application java -jar dukes.jar java -jar dukes.jar dukes.war deployDukes.sh
25. @ivar_grimstad #microservices
26. @ivar_grimstad #microservices Hardware Operating System JVM UberJAR Hardware Operating System JVM MicroProfile Container MicroProfile Application Hardware Operating System JVM Java EE Container Java EE Application docker run dukes docker run dukes docker run dukes
27. @ivar_grimstad #microservices DEMO
28. @ivar_grimstad #microservices
29. @ivar_grimstad #microservices Externalised Configuration #3
30. @ivar_grimstad #microservices How to enable a service to run in multiple environments without modification?
31. @ivar_grimstad #microservices Configuration for MicroProfile
32. @ivar_grimstad #microservices System Properties System.getProperties() Environment Variables System.getenv() Application Configuration META-INF/microprofile-config.properties
33. @ivar_grimstad #microservices DEMO
34. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE MicroProfile 2.1 JAX-RS 2.1 JSON-P 1.1 CDI 2.0 Config 1.3 Fault Tolerance 1.1 JWT Propagation 1.1 Health Check 1.0 Metrics 1.1 Open Tracing 1.2 Open API 1.0 = Updated = No change from last release (MicroProfile 2.0) = New Rest Client 1.1 JSON-B 1.0
35. @ivar_grimstad #microservices Health Check API #4
36. @ivar_grimstad #microservices How to detect that a running service instance is unable to handle requests?
37. @ivar_grimstad #microservices MicroProfile Health API
38. @ivar_grimstad #microservices DEMO
39. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE MicroProfile 2.1 JAX-RS 2.1 JSON-P 1.1 CDI 2.0 Config 1.3 Fault Tolerance 1.1 JWT Propagation 1.1 Health Check 1.0 Metrics 1.1 Open Tracing 1.2 Open API 1.0 = Updated = No change from last release (MicroProfile 2.0) = New Rest Client 1.1 JSON-B 1.0
40. @ivar_grimstad #microservices Application Metrics #5
41. @ivar_grimstad #microservices How to understand the behavior of an application and troubleshoot problems?
42. @ivar_grimstad #microservices MicroProfile Metrics
43. @ivar_grimstad #microservices DEMO
44. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE MicroProfile 2.1 JAX-RS 2.1 JSON-P 1.1 CDI 2.0 Config 1.3 Fault Tolerance 1.1 JWT Propagation 1.1 Health Check 1.0 Metrics 1.1 Open Tracing 1.2 Open API 1.0 = Updated = No change from last release (MicroProfile 2.0) = New Rest Client 1.1 JSON-B 1.0
45. @ivar_grimstad #microservices Circuit Breaker #6
46. @ivar_grimstad #microservices How to prevent a network or service failure from cascading to other services?
47. @ivar_grimstad #microservices
48. @ivar_grimstad #microservices
49. @ivar_grimstad #microservices DEMO
50. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE MicroProfile 2.1 JAX-RS 2.1 JSON-P 1.1 CDI 2.0 Config 1.3 Fault Tolerance 1.1 JWT Propagation 1.1 Health Check 1.0 Metrics 1.1 Open Tracing 1.2 Open API 1.0 = Updated = No change from last release (MicroProfile 2.0) = New Rest Client 1.1 JSON-B 1.0
51. @ivar_grimstad #microservices Access Token #7
52. @ivar_grimstad #microservices How to communicate the identity of the requestor to the services that handle the request?
53. @ivar_grimstad #microservices Basic Authentication
54. @ivar_grimstad #microservices POST /hello HTTP/1.1 Host: localhost:8080 Authorization: Basic c25vb3850nBhc3M= User-Agent: HTTPie/0.9.9 Accept: */* Content-Type: application/json Content-Length: 26 {“message”:“Hello, Duke!”}
55. @ivar_grimstad #microservices OAuth 2.0
56. @ivar_grimstad #microservices POST /hello HTTP/1.1 Host: localhost:8080 Authorization: Bearer 2YotnF2FEjrlzCsidMWpAA User-Agent: HTTPie/0.9.9 Accept: */* Content-Type: application/json Content-Length: 26 {“message”:“Hello, Duke!”} POST /hello HTTP/1.1 Host: localhost:8080 Authorization: Basic c25vb3850nBhc3M= User-Agent: HTTPie/0.9.9 Accept: */* Content-Type: application/json Content-Length: 26 {“message”:“Hello, Duke!”} POST /hello HTTP/1.1 Host: localhost:8080 Authorization: Bearer 2YotnF2FEjrlzCsidMWpAA User-Agent: HTTPie/0.9.9 Accept: */* Content-Type: application/json Content-Length: 26 {“message”:“Hello, Duke!”}
57. @ivar_grimstad #microservices JSON Web Token (JWT)
58. @ivar_grimstad #microservices POST /hello HTTP/1.1 Host: localhost:8080 Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJ0b2tlbl90eXBlIjoiQ mVhcmVyIiwiYXVkIjoic2ltcGxlYXBwIiwic3ViIjoiYm9iIiwidXBuIjo iYm9iIiwiY3VzdG9tQ2xhaW0iOiJjdXN0b21WYWx1ZSIsImdyb3VwcyI6W yJhZG1pbiIsInVzZXIiXSwiaXNzIjoiaHR0cDovL29wZW5saWJlcnR5Lml vIiwiZXhwIjoxNTI1MzM5MjU5LCJpYXQiOjE1MjUyNTI4NTl9.nDDpCR2w MWsENaDGORQblErOCJ6ii1R-N6iSzVsAz2RoUlvM2PrST2qT6kje-Nz9vc ptbSpOSlF1OuJydvP8Tg3puJKI5vGyL4RMowgJHwdvv7hMZvrK1loNrPfb yv727L9UwJSZMdzL_sibiXDuj-bIBIr6yGjVF86aQnh-PWBV8HHM1iW8l1 _y351lp2CAPkfjKwLU91iIT1jO1QCwItF8Dv-zAzmhd_rOIF58eB809_5r m0MMGIuAXdgUiU2bdEJQCkTWJKNNaSu5oddZzlKaCX4hIgBdrVV6447DM0 i31YRhLpYHfbzh_NlRrRPjGPNgzOIN1RInwPC8jdg_g User-Agent: HTTPie/0.9.9 Accept: */* Content-Type: application/json Content-Length: 26 {“message”:“Hello, Duke!”}
59. @ivar_grimstad #microservices POST /hello HTTP/1.1 Host: localhost:8080 Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJ0b2tlbl90eXBlIjoiQ mVhcmVyIiwiYXVkIjoic2ltcGxlYXBwIiwic3ViIjoiYm9iIiwidXBuIjo iYm9iIiwiY3VzdG9tQ2xhaW0iOiJjdXN0b21WYWx1ZSIsImdyb3VwcyI6W yJhZG1pbiIsInVzZXIiXSwiaXNzIjoiaHR0cDovL29wZW5saWJlcnR5Lml vIiwiZXhwIjoxNTI1MzM5MjU5LCJpYXQiOjE1MjUyNTI4NTl9.nDDpCR2w MWsENaDGORQblErOCJ6ii1R-N6iSzVsAz2RoUlvM2PrST2qT6kje-Nz9vc ptbSpOSlF1OuJydvP8Tg3puJKI5vGyL4RMowgJHwdvv7hMZvrK1loNrPfb yv727L9UwJSZMdzL_sibiXDuj-bIBIr6yGjVF86aQnh-PWBV8HHM1iW8l1 _y351lp2CAPkfjKwLU91iIT1jO1QCwItF8Dv-zAzmhd_rOIF58eB809_5r m0MMGIuAXdgUiU2bdEJQCkTWJKNNaSu5oddZzlKaCX4hIgBdrVV6447DM0 i31YRhLpYHfbzh_NlRrRPjGPNgzOIN1RInwPC8jdg_g User-Agent: HTTPie/0.9.9 Accept: */* Content-Type: application/json Content-Length: 26 {“message”:“Hello, Duke!”}
60. @ivar_grimstad #microservices { “alg”: “RS256”, “typ”: “JWT} { “token-type: “access-token”, “username”: “duke”, “scopes”: [ “java”: “everywhere” ], “exp”: 1474280963, “iat”: 1474279163 “jti”: “66881b068b249ad9” } nDDpCR2wMWsENaDGORQblErOCJ6ii1R-N6iSzVsAz2RoUlvM2PrST2qT6kje-Nz 9vcptbSpOSlF1OuJydvP8Tg3puJKI5vGyL4RMowg-JHwdvv7hMZvrK1loNrPfby v727L9UwJSZMdzL_sibiXDuj-bIBIr6yGjVF86aQnh-PWBV8HHM1iW8l1_y351l p2CAPkfjKwLU91iIT1jO1QCwItF8Dv-zAzmhd_rOIF58eB809_5rm0MMGIuAXdg UiU2bdEJQCkTWJKNNaSu5oddZzlKaCX4hIgBdrVV6447DM0i31YRhLpYHfbzh_N lRrRPjGPNgzOIN1RInwPC8jdg_g
61. @ivar_grimstad #microservices ✦Header ✦ JSON, Base64 URL Encoded ✦ Algorithm, Type
 ✦Payload ✦ JSON, Base64 URL Encoded ✦ Standard + Custom entries
 ✦Signature ✦ Binary, Base64 URL Encoded ✦ The actual signature
62. @ivar_grimstad #microservices DEMO
63. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE MicroProfile 2.1 JAX-RS 2.1 JSON-P 1.1 CDI 2.0 Config 1.3 Fault Tolerance 1.1 JWT Propagation 1.1 Health Check 1.0 Metrics 1.1 Open Tracing 1.2 Open API 1.0 = Updated = No change from last release (MicroProfile 2.0) = New Rest Client 1.1 JSON-B 1.0 Open Liberty
64. @ivar_grimstad #microservices Distributed Tracing #8
65. @ivar_grimstad #microservices How to understand the behavior of an application and troubleshoot problems?
66. @ivar_grimstad #microservices
67. @ivar_grimstad #microservices DEMO
68. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE MicroProfile 2.1 JAX-RS 2.1 JSON-P 1.1 CDI 2.0 Config 1.3 Fault Tolerance 1.1 JWT Propagation 1.1 Health Check 1.0 Metrics 1.1 Open Tracing 1.2 Open API 1.0 = Updated = No change from last release (MicroProfile 2.0) = New Rest Client 1.1 JSON-B 1.0 Open Liberty
69. @ivar_grimstad #microservices Summary
70. @ivar_grimstad #microservices
71. @ivar_grimstad #microservices 1. Microservice Architecture 2. Service per Container 3. Externalised Configuration 4. Health Check API 5. Application Metrics 6. Circuit Breaker 7. Access Token 8. Distributed Tracing
72. @ivar_grimstad #MicroProfile #JavaEE #EE4J #JakartaEE
73. @ivar_grimstad #JakartaEE #EE4J
74. @ivar_grimstad #microservices
75. @ivar_grimstad #microservices Microservice Architecture http://microservices.io Samples https://github.com/ivargrimstad/microservice-patterns Microprofile http://microprofile.io Jakarta EE https://jakarta.ee
76. @ivar_grimstad #microservices cybercom.com Rem em ber to Vote!
77. @ivar_grimstad #microservices How do the clients of a Microservices-based application access the individual services?
78. @ivar_grimstad #microservices Service A Service B Service C Application Call A Call B Call C
79. @ivar_grimstad #microservices Service A Service B Service C Application API Gateway
80. @ivar_grimstad #microservices How do the clients of a Microservices-based application access the individual services?
81. @ivar_grimstad #microservices Service A Service B Service C Application API Gateway
82. @ivar_grimstad #microservices Service A Service B Service C API Gateway Web Application Mobile Application
83. @ivar_grimstad #microservices Service A Service B Service C Web Application Web API Gateway Mobile Application Mobile API Gateway
84. @ivar_grimstad #microservices
85. @ivar_grimstad #microservices How do clients of a service know about the available instances of a service?
86. @ivar_grimstad #microservices Service A Service B Service C Application Call A Call B Call C
87. @ivar_grimstad #microservices Service A Service B Service C Application Discovery Service Register Register Register
88. @ivar_grimstad #microservices Service A Service B Service C Application Discovery Service Register Register Register Lookup A Call A
89. @ivar_grimstad #microservices Service A Service B Service C Application Discovery Service Register Register Register Lookup B Call B
90. @ivar_grimstad #microservices Service A Service B Service C Application Discovery Service Register Register Register Lookup B
91. @ivar_grimstad #microservices
92. @ivar_grimstad #microservices DEMO