ahuang0107 / kotlin-springboot-demo

Kotlin Springboot Demo

start

1. 首先如果是在windows系统上使用docker，那么mysql容器挂载的my.cnf会被修改权限，导致容器内会忽略该配置，需要进入容器cd etc/mysql，然后修改权限chmod 644 my.cnf ，然后再重启容器，此时配置才生效。

Restful API

MVC Architecture

• controller layer provide api
• facade layer provide business logic
  • facade repository layer provide complex (business level) querydsl function
• service layer provide database operations
  • repo layer provide jpa function
  • repository layer provide querydsl function
  • mapper layer provide mybatis function

Json Serialize

• SpringMVC use Jackson as default
• Some part that need manually converter between json and object, such as unit test, use Gson.

Json Serialize Library Comparison

• Serialize Single Object Performance: Fastjson > Jackson >> Gson
• Serialize Large Object Performance: Jackson >> Fastjson > Gson
• Deserialization Single Object Performance: Fastjson > Jackson > Gson
• Deserialization Large Object Performance: Fastjson > Jackson > Gson

Unit Test

1. @Rollback or @Transactional is not necessary, @DataJpaTest default apply @Transactional.