 1个人参与点评 Entity tags (ETags) are a mechanism to check for a newer version of a cached file.
Problem may caused by Etag:
1. When using server farm, it may cause lower cache rate for different server genera
 1个人参与点评 原文（英文）地址： [url=http://www.mnot.net/cache_docs/]http://www.mnot.net/cache_docs/[/url] 版权声明：[url=http://creativecommons.org/licenses/by-nc-nd/2.0/deed.zh]署名-非商业性使用-禁止演绎 2.0[/url]
这是一篇知识性的文档，主要目的是为了让
1个人参与点评 By default, PHP will show header like
X-Powered-By: PHP/5.2.1
X-Powered-By may expose some security issue, it tells hacker which PHP version you are using now
Check the response for browsing h
1个人参与点评 IIS will send out server type showing the web server's type, it's kind of trick to some statistics site, the response header like:
Server: Microsoft-IIS/5.0
Server: Microsoft-IIS/6.0
Server: M
 1个人参与点评 可以通过代码实现：
[code:1:6686669672]
public class Module : IHttpModule
{
public Module()
{
}
#region IHttpModule Members
public void Dispose()
{
re
1个人参与点评 Not like IIS, you can completely remove Server header from response. The simply way is to minize the header's output by changing two propery in httpd.conf
ServerSignature Off
ServerTokens Prod
1个人参与点评 by Mads Kristensen 18. June 2007
I’ve always been a little annoyed by the fact that ASP.NET websites sends the version number as a HTTP header. For an ASP.NET 2.0 application this is added autom
Google adsense 出现公益广告是很正常的一件事情，尤其发生在刚刚申请 Google adsens 帐号的网站上，因为这个时候, Google adsense 还不了解你的网站内容。也有一些网页，由于缺乏与网页主题相关的广告，所以也会投放公益广告。
Google 提供了替换公益广告的方法，我刚刚做了几个测试，和大家分享一下：
第一，我们可以用图片来替换公益广告，比如要替换的广
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