It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.

这是一个复杂的系统，数据被复制到多个中间设备，通常是为了在数百万人同时试图访问服务时加快文件访问速度。

youdao

However, for the reasons just stated, it is generally recommended than only two versions of the same service be maintained at a time.

不过，由于上面刚刚说明的原因，通常建议任何时间仅维护相同服务的两个版本。

youdao

We also assume that Web service invocations take the same time and can all be done in parallel.

我们还假设Web服务调用使用的时间相同并且全部可以并行处理。

youdao

At the same time, a court case has raised questions about the agency's legal powers to regulate broadband service.

VOA: special.2010.03.19

Virgin Media and London Underground engineers continue to test and prepare the forthcoming WiFi service, including recent capacity testing at Chancery Lane underground station where hundreds of devices were connected to the station's WiFi service at exactly the same time to reproduce the service experience of a busy Tube train arriving at the station2.

ENGADGET: Virgin Media names the first 80 tube stations to get WiFi hotspots

At the same time the service has been involved in 54 industrial tribunals.

BBC: NI Fire Service paid unapproved bonuses to three staff

What if you can't fulfill orders fast and provide excellent service at the same time?

WSJ: Can You Handle a Sudden Surge in Sales at Your Business?