NewsCred Dhaka hosted an interactive session on MircroServices. The main focus of the event was to provide a platform for people to share their experiences, understand the architecture and hear about the challenges and benefits of continuous deployment. Presenters: Asif Rahman (CTO), Brian Schmitz (Director of Engineering), Rana Khandakar (Lead Software Engineer), Ashrafuzzaman Jitu (Engineering Manager), and Zahiduzzaman Setu (Senior Software Engineer), as they share their experiences with MicroServices and in the process find out if it is right for you.

1. Microservices
Is it for me???

2. Overview
● Microservice! Is it a new thing?
● Microservice VS Monolith
● Traits of Microservice
● Breaking up a Monolith
● Deployment strategies of Microservice

3. Microservice! is it a new thing?
SOAMicroservices

4. Microservice
Monolith

5. Microservice vs Monolith
http://www.slideshare.
net/ShobanaRadhakrishnan/ciphercloud-
microservice-meetup-managing-services-

6. ● Maintainability
○ Less code per system
○ More systems
● Deployability
○ More to deploy
○ Less to know about each deploy.
● Reliability
○ Less code causing failures
○ More network dependencies causing failure
Microservice vs Monolith

7. Microservice vs Monolith
● Scalability
○ More precise scaling
● Monitorability
○ More to monitor
○ More precise monitoring

8. Traits of Microservice:
● MicroServices
● Network Services
○ Minimal public API
○ Network calls are Expensive!

9. Traits of Microservice
● Organized around business capability
○ Cross functional teams
● Teams make their own decisions
● Eventually Consistent
○ Transaction’s do not exist!
● Design for failure
○ More external dependencies is more failure
modes

10. Microservice First
Monolith First

11. Monolith First
http://martinfowler.com/bliki/MonolithFirst.html

12. Microservice First
http://martinfowler.com/articles/dont-start-monolith.html

13. Breaking up Monolith

14. What we had
CMC Platform
Content

15. Identify the Interface(s)
CMC
Platform
Licensed content
Interface
Customer content
Interface

16. Introduce new Service
CMC
Platform
Licensed content
Interface
Customer content
Interface
Assets

17. Double write to the new storage
CMC
Platform
Licensed content
Interface
Customer content
Interface
Assets

18. Migrate Data
CMC
Platform
Licensed content
Interface
Customer content
Interface
Assets
Migrate data

19. Read from new service storage
CMC
Platform
Licensed content
Interface
Customer content
Interface
Assets

20. An Independent Service is born
CMC
Platform
Licensed content
Interface
Customer content
Interface
Assets

21. Deploy a Microservice based Stack
Common traits
● Frequency of the deployment is high
● Lots of services
● Follow Continuous Delivery
● Requirement of HA

22. Configuration management
● Define your system state in code
● Idempotent configurations
● Operations made easy for developers

23. CI/CD for Microservices

24. Why CI/CD
● The ability to release software anytime
● Parallelize and automate deployment
● Be able to scale
● Build artifacts once - deploy as needed
● Unlocks easy immutable infrastructure
● Deploy multiple services at once

25. Get your CI/CD pipeline right!!!

26. Continuous Integration
Jenkins
Failure
artifact
Get latest source
Create a build task
Deploy artifact
Build Tasks List
Commit to git

27. Scale deployment pipelines
Deploy Process

28. Q/A

29. Questions for audience
● When should we stop developing on a microservice so that it does not become a
monolith?

30. References
● http://www.martinfowler.com/articles/microservices.html
● http://microservices.io/patterns/microservices.html
● http://martinfowler.com/bliki/MonolithFirst.html
● https://www.nginx.com/blog/refactoring-a-monolith-into-microservices
● https://www.nginx.com/blog/deploying-microservices
● http://martinfowler.com/articles/dont-start-monolith.html
● http://www.slideshare.net/ShobanaRadhakrishnan/ciphercloud-microservice-
meetup-managing-services-in-a-lean-startup

31. www.newscred.com
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