Spring Cloud JUG Switzerland
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Introduction into the Spring Cloud Framework
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Spring Cloud JUG Switzerland
- 1. AGIM EMRULI, ALAIN SAHLI MICROSERVICES MIT SPRING CLOUD
- 3. CLOUD SERVICE REGISTRY, CIRCUIT BREAKER, METRICS CORE FRAMEWORK SECURITY GROOVY REACTOR IOEXECUTIONIOFOUNDATION GRAILS FULL STACK, WEB XD STREAMS, TAPS, JOBS BOOT BOOTABLE, MINIMAL, OPS-READY BATCH JOBS, STEPS, READERS, WRITERS DATA RELATIONAL DATA NON-RELATIONAL DATA BIG DATA INGESTION, EXPORT, ORCHESTRATION, HADOOP WEB CONTROLLERS, REST, WEBSOCKET INTEGRATION CHANNELS, FILTERS, ADAPTERS, TRANSFORMERS IOCOORDINATION
- 5. DISTRIBUTED SYSTEM DEPLOYMENTS @GITHUB 175 DEPLOYMENTS / DAY
- 8. Application CONFIGURATION MANAGEMENT MONOLITHIC VS. DISTRIBUTED Application JNDI Service Service Service Service Service
- 9. Spring Cloud Config Spring Cloud Config Server GIT SVN File
- 10. Config Server @Configuration @EnableAutoConfiguration @EnableConfigServer public class ConfigServerApplication { public static void main(String[] args) { SpringApplication.run(ConfigServerApplication.class, args); } }
- 11. Spring Cloud Config Server Application Spring Cloud Config Client Application Spring Cloud Config Client Application Spring Cloud Config Client
- 12. Application Spring Cloud Config Client @SpringBootApplication public class CustomerApp { public static void main(String[] args) { SpringApplication.run(CustomerApp.class, args); } } Bootstrap
- 13. Spring Cloud Bus Spring Cloud Config Server Application Application /bus/refresh AMQP
- 19. SPRING CLOUD NETFLIX Hystrix Feign Zuul Eureka Turbine Ribbon Service Registry Circuit Breaker Stream Aggregator Load Balancer Edge Service HTTP Communication
- 21. HYSTRIX BULKHEADS Tomcat Thread Pool Thread-1 Service Service Service Service Thread-2 Thread-3 XThread-4 Thread-5 Thread-6 Thread-7 Thread-8
- 23. HYSTRIX EXAMPLE SERVICE CONSUMER public class SearchGateway { @HystrixCommand(fallbackMethod = "fallback") public List<SearchHit> search(String query) { return …; } public List<SearchHit> fallback() { return Collections.emptyList(); } }
- 25. HYSTRIX DASHBOARD EXAMPLE @EnableCircuitBreaker @EnableHystrixDashboard public class HystrixApp { public static void main(String[] args) { SpringApplication.run(HystrixApp.class, args); } }
- 27. EUREKA SERVICE DISCOVERY Service Service Service Service X Service Service Service Service Eureka
- 28. EUREKA REGISTRATION EXAMPLE @SpringBootApplication @EnableDiscoveryClient public class CustomerApp { public static void main(String[] args) { SpringApplication.run(CustomerApp.class, args); } } spring.application.name=customers
- 31. RIBBON RESTTEMPLATE INTEGRATION @Service public class Service { @Autowired @LoadBalanced RestTemplate restTemplate; public String callService() { return restTemplate.getForObject("http://CUSTOMERS/{id}", String.class,"23"); } }
- 33. ZUUL REVERSE PROXY SETUP @EnableAutoConfiguration @EnableZuulProxy public class SimpleZuulServerApplication { public static void main(String[] args) { SpringApplication.run(SampleZuulProxyApplication.class, args); } } http://localhost:9090/customers http://localhost:9090/stores
- 34. Web Server Load Balancer Service Discovery Eureka Customers Stores Config Server Circuit Breaker Dashboard Browser
- 37. Instance Meta-data @Component public class ApplicationInfoBean { @Value("${ami-id}") private String amiId; @Value("${hostname}") private String hostname; @Value("${instance-type}") private String instanceType; @Value("${services/domain}") private String serviceDomain; }
- 38. Amazon RDS Schema Design Query construction / tuning Availability Backup & Recovery Patch Management Storage Upgrades
- 39. Amazon RDS @EnableRdsInstance( dbInstanceIdentifier = “test", password = “secret", readReplicaSupport = true) public static class AppConfig {}
- 40. RDS Instance Support @Service public class JdbcPersonService implements PersonService { private final JdbcTemplate jdbcTemplate; @Autowired public JdbcPersonService(DataSource dataSource) { this.jdbcTemplate = new JdbcTemplate(dataSource); } @Override @Transactional(readOnly = true) public List<Person> all() { return this.jdbcTemplate.query("SELECT * FROM Person”, … ); } @Override @Transactional public void store(Person person) { this.jdbcTemplate.update("INSERT INTO Person …”); } }
- 41. Amazon SQS HTTP Messaging Only String payload No Transactions Visibility Rules
- 42. Message Listeners @Component public class SqsController { @MessageMapping("myQueue") @SendTo("replyQueue") private String receiveMessage(MessageToProcess message, @Header(“ApproximateFirstReceiveTimestamp”) String timeStamp) { return "someReply"; } }
- 44. SNS Controllers @RestController @RequestMapping("/sns/receive") public class SnsEndpointController { @NotificationSubscriptionMapping public void confirmSubscription( NotificationStatus notificationStatus) { notificationStatus.confirmSubscription(); } @NotificationMessageMapping public void receiveNotification( @NotificationMessage String message, @NotificationSubject String subject) { } }
- 46. Caching Service @Service public class ExpensiveService { @Cacheable("CacheCluster") public String calculateExpensiveValue(String key){ return …; } }
- 48. { "Resources": { "ec2instance": { "Type": "AWS::EC2::Instance", "Properties": { "ImageId": "ami-6a56b81d", "InstanceType": "m1.small", } }, "database": { "Type": "AWS::RDS::DBInstance", "Properties": { "AllocatedStorage": "5", "DBInstanceClass": "db.m1.small", "DBName": "test", } } }
- 50. FRAGEN?