back_end

back_end study notes

SpringBoot

1. SpringInitializr : you can log in the spring website to contribute your own SpringApplication , and download the xml profile to contribute , it's an official Spring tool used for contribute Spring Application
2. Spring : IOC & AOP
   • IOC:
   • AOP:
3. Junit : a library be used to test
4. RESTFUL API :
5. Spring framework :
6. spring-boot-starter-actuator : monitoring system health :

SpringMVC

1. Model , version , controller:
   • three-layer framework
   • model/entity : match with data in tables , the lombok is usually used
   • controller : only deal with service , one controller can use many services' method
   • service : provide methods for controller
   • mapper/Dao : JPA/Mybatis used for data persistence

TDD

• TDD : Test-Driven Development

Mybatis

1. Mybatis is a semi-automatic ORM structure , ORM(object relational mapping)
2. DAO : help to store data to databases

Database design

ubuntu

• an open source linux operating system

nginx

• a web server

paging

• to solve a lot of data
• logic paging
• physical paging:
  • can use self-contained method,such as mysql's limit. But default is cannot migrate to other database