Fat controller, fat service and fat entity

gistfile1.txt

## Pros and Cons of fat controller

### Pros
+ Fast dev time, no extra layer

### Cons
+ No reusable code for different interfaces (API, CLI and Controller)


## Pros and Cons of fat service class

### Pros
+ Reusable code for different interfaces (API, CLI and Controller) 

### Cons
+ Extra layer to maintain
+ Hard to write unit tests (still need a lot of integration tests)


## Pros and Cons of fat entity class with service layer

### Pros
+ Reusable code for different interfaces (API, CLI and Controller) 
+ Easy to write unit tests

### Cons
+ Extra layer to maintain