I, Setup and config MVC:

1.Create folder express-todos

2.cd express-todos

3.npm init -y

4.npm i express helmet cors morgan dotenv mongoose nodemon body-parser

5.create folder src

6. cd src and create foler controlers, models, routes, heplers, config, 
create file index.js and .env

II, Use API

1.Get all todo

GET /api/v1/todos

2.Get todo by id

GET /api/v1/todos/:id

3.Create todo

POST /api/v1/todos

4.Update todo by id

PUT /api/v1/todos/:id

5.Delete todo by id

DELETE /api/v1/todos/:id