首次连接到网页的速度很慢 [英] First connection to webpage slow

问题描述

我有一个代码可以连接到php页面以检查版本，但是第一次它总是很慢.
之后，它立即获得内容，有人知道为什么吗?

我使用:

I have a code that connects to a php page to check a version, but its always so slow on the first time.
After that it gets the content instantly, anyone know why?

I use:

try
            {
                WebRequest req = WebRequest.Create(URI);
                WebResponse resp = req.GetResponse();
                StreamReader sr = new StreamReader(resp.GetResponseStream());
                return sr.ReadToEnd().Trim();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return null;
            }

推荐答案

可能是缓存问题.

http://msdn.microsoft.com/en-us/library/system. net.webrequest.cachepolicy.aspx [ ^ ]

Possibly a caching issue.

http://msdn.microsoft.com/en-us/library/system.net.webrequest.cachepolicy.aspx[^]

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