A microservice architecture (MSA) helps a business to be more agile by taking out the overhead and risk of large-scale software development; it uses smaller work increments, frequent iterations, and prototyping as a means of collaboration with users. To this end, an API gateway plays a major role in terms of different strategies that enable a smooth transition into an MSA. This slide deck will explore different gateway patterns in MSA.

1. Senior Director - Cloud Architecture, WSO2
The Role of API Gateway in MSA
Lakmal Warusawithana

2. Where is the World Moving
Toward?

3. 2008
iPhone
Monolithic App for Web and Mobile
2006 2010

4. 2010
iPad, Android
Monolithic Apps + Mobile APIs
2008 2012

5. 2014
IoT
Monolithic Apps + A Few Microservices + Many APIs
2012 2016

6. 2016
Bots and Messaging
Monolithic Apps + Microservices + APIs
2014 2018

7. 2020?
AI
Microservices + Serverless + APIs
2018 2022

9. What is Microservice
Architecture (MSA)?

10. https://medium.com/@burakbostancolu

11. • Faster Initial
Development
• Easy testing
• Easy to monitor
Monolithic

12. • Complexity in
growing code base
• Longer development
cycles
• Harder to scale
Monolithic

13. Microservices
• Agile
• Highly scalable
• Better organized and
easy to learn

14. Microservices
• Duplicates
• More moving parts
• Harder to test

15. From Monolithic to
Microservices

16. Marco Palladino @MesosCon 2017

17. Strategy 1 - Stop Digging

18. Strategy 2 - Ice Cream Scoop

19. Strategy 3 - Nuclear Bomb

20. The Role of API Gateway

21. Ochestration

22. Abstraction

23. Organize

24. Maintainability

25. API Gateway Patterns

26. Monolithic
Client
API
Monolithic
API Management
<< public traffic >>
<< private traffic >>

27. Centralized API Gateway
Client << public traffic >>
<< private traffic >>
MS MS MS MS MS
API
Gateway
API
Gateway
API
Gateway
API
Gateway
MS MS

28. Sidecar API Gateway
Client
<< public traffic >>
<< private traffic >>
API
Gateway
MS
API
Gateway
MS
API
Gateway
MS
API
Gateway
MS

29. wso2.com