Backend Standard Code

directory structure:
- controllers
- libraries
- loaders
- config
- mocks
- models
- routes

case standard usage :
-> class = UpperCamelCase
-> function = lowerCamelCase
-> const = lowerCamelCase
-> module = lowerCamelCase
-> local variable = snake_case

package that frequency used :
-> async : rather than loop for, or for of
-> multer : upload image
-> multerS3 : upload image using AWS S3
-> xendit node : xendit payment (generate VA & invoice)
-> cryptoJS : encryption for token
-> log4js : logging
-> aws-sdk : aws sdk key integration
-> faker : to make mock return more variative
-> memcache-plus : managing cache
-> redis : to get redis data
-> moment : time conversion
-> ampqlib : rabbitmq queue