The full IIS has an on-demand worker process model and activation system and can bring up and shutdown worker processes on demand.

完整的IIS有个按需的工作进程模型和激活系统，可以根据需要启动或是停止工作进程。

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In this article, I covered the underpinnings of the default ASP.NET process model, and the interaction between the IIS level code (the ASP.NET ISAPI extension) and the worker process.

这篇文章中，我介绍了默认asp.net进程模型的基础知识和IIS级别代码(asp.net ISAPI扩展)和工作进程的交互。

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On the other hand, the worker process exploits synchronous pipes when it needs to query for information about the IIS environment (that is, server variables).

另一方面，当需要IIS环境更多信息(即服务器变量)时，工作进程使用同步管道。

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