Spring to Cloud - REST To Microservices
- 2. RANGA RAO KARANAM Top Instructor on Udemy Author of "Mastering Spring 5.0"
- 3. IN28MINUTES Create more great programmers Help you make the right career choices
- 8. MICROSERVICES IS THE LATEST ONE!
- 9. MICROSERVICES VS MONOLITH What are you doing today?
- 10. MONOLITH
- 14. AGILE?
- 18. SOLUTION?
- 19. MICROSERVICES
- 20. Small autonomous services that work together - Sam Newman
- 21. Developing a single application as a suite of small services each running in its own process and communicating with lightweight mechanisms, o en an HTTP resource API....contd
- 22. These services are built around business capabilities and independently deployable by fully automated deployment machinery...contd
- 23. There is a bare minimum of centralized management of these services, which may be written in different programming languages and use different data storage technologies - James Lewis and Martin Fowler
- 24. MICROSERVICES REST & Small Well Chosen Deployable Units & Cloud Enabled
- 25. HOW DOES IT LOOK?
- 26. MONOLITH
- 29. ADVANTAGES?
- 30. NEW TECHNOLOGY & PROCESS ADAPTION
- 32. SCALING
- 35. AUTOMATION
- 36. VISIBILITY
- 37. BOUNDED CONTEXT
- 39. DYNAMIC SCALE UP AND SCALE DOWN
- 40. PACK OF CARDS
- 41. DEBUGGING
- 42. CONSISTENCY
- 43. SOLUTIONS
- 44. SPRING BOOT
- 45. Enable building production ready applications quickly
- 46. PROVIDE NON-FUNCTIONAL FEATURES embedded servers metrics health checks externalized configuration
- 47. DEMO
- 48. SPRING VS SPRING MVC VS SPRING BOOT
- 49. KEY FEATURES
- 51. STARTER PROJECTS
- 52. SPRING CLOUD
- 53. DYNAMIC SCALE UP AND DOWN Naming Server (Eureka) Ribbon (Client Side Load Balancing) Feign (Easier REST Clients)
- 54. VISIBILITY AND MONITORING Zipkin Distributed Tracing Netflix API Gateway
- 55. CONFIGURATION MANAGEMENT Spring Cloud Config Server
- 57. Microservices
- 58. CURRENCY EXCHANGE SERVICE http://localhost:8000/currency-exchange/from/EUR/to/INR { id: 10002, from: "EUR", to: "INR", conversionMultiple: 75, port: 8000 }
- 59. CURRENCY CONVERSION SERVICE http://localhost:8100/currency-converter/from/USD/to/INR/quant { id: 10001, from: "USD", to: "INR", conversionMultiple: 65, quantity: 10, totalCalculatedAmount: 650, port: 8000 }
- 64. HOW TO PROVIDE DYNAMIC LOAD BALANCING?
- 67. API GATEWAYS Authentication, authorization and security Rate Limits Fault Tolerance Service Aggregation
- 69. LIMITS SERVICE @Component @ConfigurationProperties("limits-service") public class Configuration { private int minimum; private int maximum; @GetMapping("/limits") public LimitConfiguration retrieveLimitsFromConfigurations() { return new LimitConfiguration(configuration.getMaximum(), configuration.getMinimum()); }
- 70. Spring Cloud Config Server
- 71. Server Dependency - spring-cloud-config-server Client Dependencies - spring-cloud-starter-config Limits Service <--> Spring Config Server
- 72. bootstrap.properties spring.application.name=limits-service spring.cloud.config.uri=http://localhost:8888 spring.profiles.active=qa Limits Service <--> Spring Config Server
- 73. @SpringBootApplication @EnableHystrix public class LimitsServiceApplication { @GetMapping("/fault-tolerance-example") @HystrixCommand(fallbackMethod="fallbackRetrieveConfiguration" public LimitConfiguration retrieveConfiguration() { throw new RuntimeException("Not available"); } public LimitConfiguration fallbackRetrieveConfiguration() { return new LimitConfiguration(999, 9); } Fault Tolerance with Hystrix
- 74. QUESTIONS