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layers (service, data, caching) infrastructure: load balancing, messaging rough overview of any key algorithm that drives the service consider bottlenecks and determine solutions Exercises: Design a CDN network: old article Design a random unique ID generation system Design an online multiplayer card...
You'd have a setup that not only allowed you to be more selective in the way your home is heated, but also potentially saved you money on your utility bills. Zoned HVAC can leverage your central air conditioning system or ductless air conditioners to allow you to control the temperature ...
selective方法:选择性插入或更新,判断PO字段不为空才插入或修改。在只需要插入或修改个别字段值时使用,对应生成的SQL不包括=null的字段,但同样也需要注意,你无法用它将字段设置为null。 😜 by example方法:这个东西有点小强大,可以动态生成各种查询条件,在后面的接口开发实战中我们再使用。但就是生成的代码有点多...
Service.selectList(null); } @RequestMapping("/list") public Page<Coach> list(){ System.out.println("fff"); Page<Coach>selectPage=iCoachService.selectPage(new Page<>(0,10),null); System.out.println("ccc"); System.out.println(selectPage); System.out.println(selectPage.getTotal()); System...
因为最近公司项目升级,需要将外网数据库的信息导入到内网数据库内。于是找了一些springboot多数据源的文章来看,同时也亲自动手实践。可是过程中也踩了不少的坑,主要原因是我看的文章大部分都是springboot 1.X版本的。 于是我就打算把这次搭建springboot+mybatis+druid+atomikos的框架过程记录下来,方便大家借鉴,也方便自...
Configurationconfig=cp.parseConfiguration(is);is.close();DefaultShellCallbackcallback=newDefaultShellCallback(overwrite);//创建 MBGMyBatisGeneratormyBatisGenerator=newMyBatisGenerator(config,callback,warnings);//执行生成代码myBatisGenerator.generate(null);//输出警告信息for(Stringwarning:warnings){System....
(Fig.1b, arrowheads). When Gal-4-HA expression is induced in other cells of the nervous system that express very low levels of endogenous Gal-4, such as astrocytes, non-permeabilized immunostaining for HA is observed as membrane “patches” (Fig.1c, arrowheads). Importantly, our non-...
.andGreaterThan("empAge", 30);//4.使用OR 关键词组装两个Criteria 对象example.or(criteria02);//5.执行查询List<Employee> empList =employeeService.getEmpListByExample(example);for(Employee employee : empList) { System.out.println(employee); ...