Java-Interview-Guide

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History

ROPAGATION_NESTED：如果当前存在事务，就在嵌套事务内执行；如果当前没有事务，就执行与PROPAGATION_REQUIRED类似的操作，子事务回滚外部主事务也会受到影响进行回滚



``` 
@service
public class UserInvokeService {
    @Autowired
    private UserService userService;
    @resource
    private UserMapper userMapper;

    @transactional
    public void invokeUserService() {
        User user = new User();
        user.setName("zxx");
        user.setAge(333333);
        userMapper.insert(user);
        userService.insertData();

    }
}


@service
public class UserService {

    @resource
    private UserMapper userMapper;


    @transactional(propagation = Propagation.NESTED)
    public void insertData() {
        User user = new User();
        user.setName("inserByNested");
        user.setAge(2222);
        userMapper.insert(user);
        int a = 1 / 0;
    }

}


@SpringBootTest
public class TransactionalTest {
    @Autowired
    UserService userService;
    @Autowired
    UserInvokeService userInvokeService;
    @test
    public void testTransaction() {
        userInvokeService.invokeUserService();
    }
}
```

2022-03-10 22:44:23 +08:00

.vuepress

[docs add]Redis 内存碎片

2022-03-09 22:09:26 +08:00

about-the-author

[docs fix]rss订阅修复

2022-03-08 15:47:50 +08:00

cs-basics

[docs fix]typo

2022-03-09 08:58:30 +08:00

database

Update mysql-logs.md