Microservices

Question 1

What are 6 Microservice design principles?

Answer 1

1) High Cohesion
2) Autonomous
3) Business Domain Centric
4) Resilience
5) Observable
6) Automation

Question 2

What does High Cohesion mean?

Answer 2

1) Has a single focus / responsibility (e.g. calculating postage / accounts)
2) Only change for one reason
3) Reason represent Business Domain or Business Function.
4) Small code base

Question 3

What does Autonomous mean?

Answer 3

1) Loose coupling - Should not change because of another service or client it interacts with changes
2) Honor contracts and services - inputs and outputs should not change
3) Stateless
4) Independently changeable
5) Independently deployable
6) Backward compatible
7) Concurrent development

Question 4

What does Business Domain Centric mean?

Answer 4

1) Based around domain driven design