Sogeti Guru Night 2015: Changes in-software-development
- 2. Erwin de Gier Sogeti Java CoE Amsterdam, Oktober Februari 2015 Changes in Software Development
- 3. 3 Demands • Mobile devices • Multicore • Cloud computing • Interactive & real-time • Responsive • Collaborative • Frequent changes • Data increase
- 4. 4 Trends Microservices Event Driven Scalable
- 5. 5 The Java application server Application Server App1 App2 App3 App4
- 6. 6 The Java application server Application Server App1 App2 App3 App4 Application Server App1 App2 App3 App4
- 7. 7 The Java application server Application Server App1 Application Server App1
- 8. 8 The Cloud
- 9. 9 Containers
- 11. 11 Microservices • Independent lightweight processes • Platform agnostic • (Immutable) containers • Standardized DevOps tooling • Technology diversity
- 12. 12 Event Driven Architecture Shopping Cart Created Product1 Added Product2 Added Address Added
- 13. 13 Event Driven Architecture • Producers • Consumers • Functions react to events • Events are state changes • Asynchronous • Loose coupling • Responsiveness
- 15. 15 Connection scaling • “Classic” model of scaling threads per connection is limited • CPU and memory bound • c10k problem • non blocking event loop
- 16. 16 Blocking vs non-blocking Client Server One thread per connection (1 client) Client Server One thread per event- loop (multiple clients) Request Response Request Request Request Callback Callback Callback
- 17. 17 Reactive manifesto • react to events (message driven) • react to load (scalable) • react to failure (resilient) • react to users (responsive)
- 18. 18 Need for a new solution • Deployment of light-weight processes • Asynchronous stack • Reactive programming • Polyglot • Distributed • Event driven
- 19. 19