在我们的例子中，后台服务仅提供一个操作。
In our example, the back end web service offers only one operation.
该中介流可以调用不同类型的后台服务。
The mediation flow can possibly invoke different types of back ends.
选择后台服务使所有程序都能获得相同的处理器时间。
Select Background services so that all programs receive equal amounts of processor time. Follow these steps.
图5演示了由一组后台服务和模拟器共同支持的系统的逻辑视图。
Figure 5 illustrates a logical view of a system supported by a combination of live back-end services and simulators.
某些应用可作为后台服务运行；而有些只有被暂停，然后重新开始。
Some apps can run as background services; some are only paused and then resumed.
如何使服务器前端的维护页面，当你重新启动后台服务？
How to enable a maintenance page on the frontend server while you are restarting the backend service?
Back表示当消息从Web服务发到后台服务时，报头将被注入。
Back means that the header will be injected when the message travels from the Web service proxy to the back-end service.
如果您想进入后台服务乃至完整的文件，这是相当有效的。
If you are going to be behind a podium then full size paper is quite effective.
经销商的后台服务如何，他一无所知，他的摩托从来都是他自己照料。
He doesn't know what the inside of the service department of the dealership looks like, cause nobody works on his bike but him.
这通过执行一个后台服务定期动(touch)一下相关文件来实现。
This is done by running a background service which touches the relevant files periodically.
该后台服务器组件透明地运行在设备上，且在设备启动时自动运行。
This background server component runs transparently on the device and starts automatically when the device is powered on.
虽然这些工具还不是很全面，但是它们能够出色的测试您创建的中介和后台服务。
Although, it is not a comprehensive list of tools, you may find them useful to test both: the mediations you have created and the back end services, as well.
总体而言，目前关于云计算的讨论大多数还集中在后台服务器系统上。
In general, most of the current discussion around cloud computing has been dealing with the servers (or back-end systems).
该论文从后台服务器和监控中心的功能模块的角度来分析车辆监控系统。
I analyze the vehicle monitoring system from functional modules of the background server and control center.
它允许将后台服务器使用的身份与客户端应用程序分离，这可以增强安全性。
It allows the separation of the identities used by the back-end server and client applications, which can be considered an extra level of security.
现在已经配置好WebServiceProxy，可以调用样例后台服务了。
The Web Service Proxy is now configured and is ready to invoke the sample back end service.
既然我们已经了解了Web应用将使用到的后台服务，接下来我们将了解它使用到的前台。
Now that you've seen the back-end service that the Web application will use, it is time to look at the front end that USES it.
然后，您仅需要在一定间隔之后连接到后台服务器(如每三十分钟)，以刷新数据。
Then, you would only need to connect to the backend server at some interval (say, every thirty minutes) to refresh the data.
由于模拟器模仿活动的后台服务，服务指示板也可以在活动后台服务可用时测试和解决故障。
Because simulators mimic the live back-end services, the service dashboard can also be used to test and troubleshoot the live back-end services when available.
苹果限制用到网络、GPS及其他与通话相关的资源的后台服务的使用a，以便节省电池寿命。
Apple restricts the use of background services that use the network, GPS, and other phone-related resources, in order to conserve battery life.
许多的公司将它们的后台服务部门、一些商业部门和支援部门迁到了邻近的新泽西和康涅狄格。
Many firms shifted their back offices, some business units and support operations to neighbouring New Jersey and Connecticut.
后台服务使创建能够不用用户直接动手而执行自动处理的不可见的应用组件成为可能。
Background services make it possible to create invisible application components that perform automatic processing without direct user action.
有些情况下，还会将消息发送给后台服务提供者应用程序，以确保前台和后台连接都能够正常使用。
In some instances, this effort is extended to include sending messages through to backend service provider applications to ensure that both frontside and backside links are in service.
万一遇到刮风下雪——后台服务的响应延迟从250毫秒增加到一分钟的时候，系统能否继续工作？
Or will they keep working when the snow flies and some back end service suddenly takes a minute to respond instead of 250 milliseconds.
在详细讨论这个问题之前，让我们先快速地了解一下本文所开发的应用所使用的后台服务器。
Before I get into that, let's take a quick look at the back-end server that the application you will create in this article will be calling.
注意：后台服务程序已经启动，你们现在应该可以上传计算结果直到明天上午服务器停机。
NOTE: The daemons are up and running again so you should be able to upload results right up until the machine goes down tomorrow morning.
而该语言同时具备了编写后台服务器(不仅仅是网站后台)的能力是一件极为引人注目的事情。
Having the ability to write the backend services (and not just the web backend) in the same language is something extremely attractive.
如果用户想使用他们的移动设备，从标签上获取信息，那么首先必须获取后台服务器的认证。
If users want to use their mobile devices to obtain information from the tag, the back-end server must first obtain certification.
只有充分保障三个关键区域：后台服务器区域、中间的网络平台和前端的业务终端，实现高可用。
Only by fully protect three key regions: the background server region, the middle of the front-end Web platform and the business end, to achieve high availability.
模拟器框架提供了一种可快速采用模拟器最佳实践的机制，包括使用服务指示板监控模拟的和活动的后台服务。
The simulator framework provides a mechanism for quickly adopting the use of the simulator best practice, including the use of the service dashboard to monitor simulated and live back-end services.
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