What are the major components of an Web API Framework – defining a chain of responsibility

Authentication and Authorization

Routing

Model Binding

Model Validation

Exception Handling

Result Formatting

All above applied before, during and after we provide CRUD actions / functions like:

Create / post

Read / get

Update / put

Delete / delete

generally a Web API framework as above defines a chain of responsibiliity design pattern vs:

Decorator or Composite

https://www.longest.io/2015/03/19/composite-chain-decorator-comparison.html