The document discusses microservices architecture as a modernized version of service-oriented architecture (SOA), emphasizing its advantages such as speed of delivery, scalability, and modularity. It highlights principles like statelessness, high observability, and the importance of automation, while also noting potential drawbacks such as increased complexity and challenges with consistency in distributed systems. The conclusion states that the microservices architecture, while beneficial for growth and scalability, introduces significant complexity compared to traditional monolithic systems.

1. Microservices Architecture
Mohamad Farhani

2. Architectural style

3. This is not new!
The old new thing...

4. SOA
service oriented architecture
• Modernized version of SOA
New world:
• Speed of delivery
• Scalability
• Cloud / devops

5. VS
Monolith microservices

6. PRESENTATION LAYER
BUSINESS LOGIC LAYER
DATABASE LAYER
A monolith Module
A
Module
B
Module
c
Module
D

7. VS
monolith microservices

8. PRESENTATION LAYER
BUSINESS LOGIC LAYER
DATABASE LAYER
microservices
API API
BUSINESS LOGIC
LAYER
DATABASE LAYER
consume
Produce
Microservice 1
Microservice 2

9. Modularity
Autonomous
hide implementation details
Stateless
highly observable
principles

10. Modularity (TEAM)
UI - team
Dba - team
SERVER
UI dba
SERVER
dbaUI
dba
SERVER
UI
SERVER - team
monolith microservices

11. autonomous

12. autonomous
monolith microservices

13. hide implementation details
API
-http
-rest
-json
API
http-
Rest-
Json-

14. stateless
(1)
(2)
A stateless server is a server that treats each request as an
independent transaction that is unrelated to any previous
request

15. Highly observable
Logs

16. Highly observable
Centralized logging

17. Highly observable
Centralized logging

18. Highly observable
monitoring

19. Modularity
Autonomous
hide implementation details
Automation
Stateless
highly observable
principles

20. Advantages

21. Polyglot architecture
- The right technology for the job
- reduce technical debt

22. Evolutionary design
- Remove
- Add
- Replace
- Experimental microservice

23. Selective scalability
Nb users > 500

24. Big vs small
Smaller code base
Simpler to develop / test / deploy / scale
Start faster
Easier for new developers

25. drawbacks

26. • Distributed system
- Consistency
- Request travelling
• Slow (http)
• Multiple databases
• Integration tests
Conclusion:
• The Microservices architecture is more complex
Than a monolith.
• This is the cost of growing and scaling easily

27. Microservices ecosystem

28. Load balancer
Load balancer

29. Service discovery
server
I want TO TALK TO
THE PRODUCT
SERVICE !
Here is the product
service !
Service discovery

30. Service discovery (load balancing)
Service discovery
server
I want TO TALK TO
THE PRODUCT
SERVICE !
Here is one instance of
product service !

31. Api Gateway
API Gateway
Browser UI
e.g. angular 2
Mobile app

32. THANKS !