当站点在您进行了此类更改后收到其第一个页请求时，ASP。
When the site receives its first request for a page after you have made such a change, ASP.
有时，缓存整个页是不切实际的，因为在每次请求时可能需要更改页的某些部分。
Sometimes it is impractical to cache an entire page because portions of the page might need to change on each request.
有时，缓存整个页是不切实际的，因为在每次请求时可能需要更改页的某些部分。
Sometimes it is impractical to cache an entire page because portions of the page might need to change on each request.
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