Explore the world of Microservices architecture to design, develop and deploy scalable, quality ecosystems.

1. Microservices
Demystified
Selvakumar Natesan

2. What are Microservices?

3. Typical application
What are Microservices?

4. What are Microservices?

5. Monoliths
What are Microservices?

6. Microservices
* Each element as its own service
What are Microservices?

7. Microservices
What are Microservices?

8. Small autonomous services
that work together
- Sam Newman
What are Microservices?

9. SOA ?
ESB
(proprietary tools)
Heavy Integration
(like WCF, SOAP, JBI)
Hard to test
Technical service
boundaries
Business Contract
as boundaries
Lightweight transport
(like http/json)
What are Microservices?

10. service-oriented architecture composed of
loosely coupled elements that have
bounded contexts
- Adrian Cockcroft
Microservices
What are Microservices?

11. Microservices
Write programs that do one thing and do it
well. Write programs to work together
- The Unix Way
What are Microservices?

12. Characteristics of a Microservice
Architecture
> Componentization via Services
> Organized around Business Capabilities
> Products not Projects
> Smart endpoints and dumb pipes
> Decentralized Governance
> Decentralized Data Management
> Infrastructure Automation
> Design for failure
> Evolutionary Design
http://martinfowler.com/articles/microservices.html

13. Componentization via Services
http/json
async / messaging
Communication
Service
Order
Service
Catalog
Service
http/json
Recommendation
Service
Characteristics of a Microservice

14. Organized around Business Capabilities
Presentation
Business Logic
Data Access / DB
Characteristics of a Microservice

15. Characteristics of a Microservice
Catalog
Order
Shipping
Bounded Context
Organized around Business Capabilities

16. Characteristics of a Microservice
Catalog
Order
Shipping
Organized around Business Capabilities
"organizations which design systems ... are constrained to produce
designs which are copies of the communication structures of these
organizations" —Melvin Conway

17. Products, Not Projects
Characteristics of a Microservice
Catalog
Team own end to end
From technical choices to deployment

18. {
"id": "iphone-6s-16gb",
"specification": {
"...": "..."
},
"price": 35000,
"currency": "₹",
"...": "..."
}
Smart endpoints and dump pipes
Characteristics of a Microservice
Catalog
Order
Communication
RESTful
(http / json)
/items/iphone-6s-16gb

19. Characteristics of a Microservice
Catalog
Order
Decentralized Governance
Communication

20. Characteristics of a Microservice
Catalog
Order
Communication
Decentralized Data Management

21. Infrastructure Automation
Characteristics of a Microservice
> builds
> tests - unit, integration, end to end, performance
> provisioning
> deployment
> from test environment
> to production

22. Infrastructure Automation
Characteristics of a Microservice

23. Design for failure
Characteristics of a Microservice
> Tolerate the failure of services
> Timeouts, retries and circuit breaker patterns
> Real-time monitoring
> Log aggregation

24. Evolutionary Design
Characteristics of a Microservice
> Build few bigger services first
> Then, slowly peel off different services
> Based on independent replacement and upgradeability
> Make granular releases

25. Characteristics of a Microservice
Architecture
> Componentization via Services
> Organized around Business Capabilities
> Products not Projects
> Smart endpoints and dumb pipes
> Decentralized Governance
> Decentralized Data Management
> Infrastructure Automation
> Design for failure
> Evolutionary Design
http://martinfowler.com/articles/microservices.html

26. Are you ready for Microservices?

27. Readiness for microservices
Are you ready for Microservices?
> Operational Complexity due to distribution
> Tolerance for Eventual consistency
> Automated Testing (Test Pyramid)
> Automated Build and Deployment
> Rapid Provisioning
> Monitoring needs
> Remote calls – expensive
Avoid microservices envy

28. Readiness for microservices http://martinfowler.com/bliki/MicroservicePremium.html

29. Readiness for microservices
Microservice architectures provide unique
benefits at the cost of increased (essential)
complexity.

30. Want to know more?
martinfowler.com/microservices
Building Microservices
Domain-Driven Design
Implementing Domain-Driven Design
Release It!

31. Thank you!
Selvakumar Natesan
@selvakn
#XConf #Coimbatore

32. Who are all doing Microservices?