Event-driven architecture

Palestra apresentada no PHP community summit 2019 em SP

Transcript

1. 1 EVENT-DRIVEN ARCHITECTURE
2. Evandro Mohr Developer Pilot Professor Photographer
3. 1. The quest for scalability 3 A tale of a company...
4. “ 4 Scalability is the property of a system to handle a growing amount of work by adding resources to the system.
5. 5 Scalability Development • New features • Continuous Deployment • New team members • New technologies Software • Usage • Concurrency • Stored data • Availability
6. Scalability cube 6 y-axis x-axis z-axis
7. Monolithic Application 7 Monolithic Application Data Storage Database
8. Monolithic Application 8 Shop Rich UI Shop UI UI Logic GUI Data Storage Shared database Shop Backend Application Search Facade Order DAO Customer DAO Order Facade Business Data Product DAO GUI Data Customer UI Customer BO Customer Fat Client App
9. Business Entity Service Customer BAS SOAP Payment BAS SOAP Product BAS SOAP Order BAS SOAP Business Activity Service Custer BAS SOAP Search BAS SOAP Order BAS SOAP SOA Approach 9 Shop Rich UI Shop UI UI Logic GUI Shop UI App Shop UI UI Logic GUI Data Storage Customer Database Order and Product DB
10. Virtualized SOA Approach 10 Shop UI App Shop UI UI Logic GUI Shop Web App Shop UI UI Logic GUI The raise of the Enterprise Service Bus (ESB) Service Virtualization Layer SOAP Custer BAS SOAP Search BAS SOAP Order BAS S O A P Customer BAS Business Activity Service S O A P Payment BES S O A P Product BES S O A P Order BES Business Entity Service Data Storage Order and Product DB Customer Database Service Bus
11. Orchestrated & Virtualized SOA Approach 11 Service Bus Shop UI App Shop UI UI Logic GUI Shop Web App Shop UI UI Logic GUI The raise of orchestration engines (BPEL & BPMN) Service Virtualization Layer SOAP Custer BAS SOAP Search BAS SOAP Order BAS S O A P Customer BAS Business Activity Service S O A P Payment BES S O A P Product BES S O A P Order BES Business Entity Service Data Storage Order and Product DB Customer Database Orchestration
12. 2. Microservices 12 The silver bullet...
13. Customer Logic Customer Customer API REST Order Logic Order Order API REST Order Microservice Stock Logic Stock Stock API REST Stock Microservice Product Logic Product Product API REST Product Microservice Microservices Approach 13 Shop Web App GUI UI Logic Shop UI
14. Microservices & API Gateway Approach 14 Shop Web App GUI UI Logic Shop UI Customer Logic Customer Customer API REST Order Logic Order Order API REST Order Microservice Stock Logic Stock Stock API REST Stock Microservice Product Logic Product Product API REST Product Microservice 14
15. Microservices & API Gateway Approach 15
16. EVENT SOURCING 16
17. “ 17 Event Sourcing ensures that all changes to application state are stored as a sequence of events. Not just can we query these events, we can also use the event log to reconstruct past states, and as a foundation to automatically adjust the state to cope with retroactive changes. - Martin Fowler
18. Log- Structured Approach 18
19. “ 19
20. “ 20
21. Event-Driven Architecture 21 ▪ 100% accurate audit logging ▪ Easy temporal queries ▪ Asynchronous communication ▪ Data Consistency ▪ Data recovery ▪ Horizontal scaling ▪ Loosely coupled services ▪ Act as Message Broker ▪ Idempotence
22. Event-Driven Architecture 22
23. Microservices & Event Sourcing Approach 23
24. Event Sourcing & Data streams Approach 24
25. Integrate Legacy Applications 25
26. A better Microservices Approach 26
27. Questions? 27
28. References 28 • https://guidoschmutz.wordpress.com/ • http://microservices.io • https://kafka.apache.org/ • https://martinfowler.com/eaaDev/EventSourcing.html https://www.confluent.io/blog/data-dichotomy-rethinking-the-way-we -treat-data-and-services/ • https://engineering.linkedin.com/distributed-systems/log-what-every-s oftware-engineer-should-know-about-real-time-datas-unifying • https://medium.com/@hugo.oliveira.rocha/what-they-dont-tell-you-abo ut-event-sourcing-6afc23c69e9a
29. Thank you very much for your time 29