Gluecon 2013 talk on eCommerce API architecture

1. Architecting e-Commerce APIs
Saranyan Vigraham
@saranyan, Tech Guy, Bigcommerce)

2. What is BAD
software design?

3. Rigid - Hard to Change
Too many parts get affected by a change

4. Fragile - Unexpected things
Something else breaks

5. No re-usability
It is part of the “core code”

6. Mobile, Blah Blah!

7. Importance of Platform

8. Where is your
API?

9. We are forced to rethink our architectures
Website and Mobile
Templates
Database
MVC
Mobile Templates
MVC
Templates
Database
Static Assets
Mobi
MVC
Mobile Templates
Static Assets
Templates
Database
MVC
Static Assets

10. Website
Templates
MVC
Static Assets
Mobile
Templates
MVC
Static Assets
Native App
Native App API
Database

11. The Big Ball of Mud
Brian Foote and Joseph Yoder, laputan.org/mud

12. The Big Ball of Mud

13. Starting with API first

14. Everything is a service!
UI
UI
API Layer
UI

15. Everything is a service!
API Layer
Payments
Orders
...
Authentication

16. Everything is a service!
API Layer
Payments
Orders
Service Container
Single
Code Base
...
Authentication

17. Everything is a service!
API Layer
Payments
Orders
Service Container
X
Single
Code Base
...
Authentication

18. Everything is a service!
API Layer
Single
Code Base
Payments
Orders
Service Container
...
Authentication

19. Liskov Substitution
Client
Service 1
Service 2
Service 3

20. Liskov Substitution
Client
Service 1
Service 2
Service 3

21. Liskov Substitution
API Layer
Single
Code Base
Payments
Shipping
...
Authentication
Service Container
New Authentication
System
Shipping Service
2.0
New Service Container

22. Interface Segregation
Single
Code Base
API Layer
Payments
Orders
Service Container
...
Authentication

23. Interface Segregation
Single
Code Base
UI
UI
API Layer
Payments
Orders
Service Container
...
Authentication

24. Interface Segregation
API Layer
Payments
Orders
Service Container
Single
Code Base
...
Authentication

25. Interface Segregation
Single
Code Base
UI
UI
API Layer
Payments
Orders
Service Container
...
Authentication

26. Re-cap
• Everything is a service
• Single codebase - Creation of
sandboxes, provisioning, etc
• Liskov substitution
• Interface Segregation

27. ?
@saranyan
https://developer.bigcommerce.com