More Than An "API" | Jae Lee

1. Maximize business profitability and productivity
with microservices in the cloud
OpenInfra Days Vietnam 2019
August 24th, 2019

2. Jae Lee, Chief Technology Officer

3. WorldRoamer aims to be an all-in-one online travel platform that will cater to the consumer’s
travel needs - this will start with hotel bookings.
We are working towards being able to facilitate and understand traveller needs, personal
discoveries, and provide them the best experience we can through discovery of inspirations,
unique tools and our select network of properties & activities.

5. Microservices Design Sandwiches

6. What are microservices?
“

7. Microservices are a software development technique - a variant of the service-oriented architecture (SOA)
architectural style that structures an application as a collection of loosely coupled services.
— via Wikipedia

8. The core principals of a 21st century architecture are availability, reliability and resilience.
• Availability is implemented by deploying systems
• Reliability is understating your dependencies
• Resilience is the ability to fail fast
— quoted by Werner Vogels, CTO of Amazon

9. Design a robust architecture culture.
“

11. Build services that are small, focused, and simple enough for any qualified developer in the
organization to quickly comprehend and modify them without having prior experience.

12. Now let’s make that sandwich.
“

13. The goal is to make a peanut butter and jelly sandwich.

14. Monolithic Microservices
Which option will you choose?

15. Monolith Applications
• Same programming language
• Same framework
• Same data stores

16. Microservices
• Develop each component on its own
• Dedicated tool that best suits each component
• Individual microservices are independent of one another

17. What if we needed to make a lot more peanut butter and jelly sandwiches?

19. Independent. Flexible. Robust.
What are the advantages of a microservices architecture?

20. Maintainability. Complexity. Testing.
Then what are the disadvantages?

22. It’s just a sandwich.
“

23. Thank you.