Unit tests are meant to run in isolation, which means that no database is running, no Web server is running, and — most important — no Grails-related metaprogramming occurs.
单元测试意味着在隔离环境中运行，所以不会运行数据库和Web服务器，最重要的是不会发生与Grails 相关的元编程。
Web 2.0 client developers do not need fully functional application servers and can often get by with a plain Web server or file system for unit testing.
Web 2.0客户端开发人员不需要功能全面的应用程序服务器，一个普通 Web服务器或单元测试文件系统也可以。
As a simple example, by watching central processing unit (CPU) usage on a Web server, you can see when it is overloaded.
作为一个简单的方法，查看一下Web服务器上的中央处理单元(CPU)使用率，就可以了解CPU是否负载过重。
Using the same steps as for the Internet Information Server 6.0 unit, update the unit title to be ASP.NET 2.0 Web Component.
对InternetInformationServer 6.0单元使用相同的步骤，将单元标题更新为asp.net 2.0WebComponent。
Using the same steps as for the Internet Information Server 6.0 unit, update the unit title to be ASP.NET 2.0 Web Component.
对InternetInformationServer 6.0单元使用相同的步骤，将单元标题更新为asp.net 2.0WebComponent。
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