ashx 文件的输出（服务器端）缓存
我正在尝试对站点中的所有 ashx 文件启用输出缓存。我试图阻止服务器在每个请求上生成文件 - 而不是试图告诉浏览器缓存文件。
我已将 ashx 文件提炼为以下简单代码：
public class DefaultStyles : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/css";
StringBuilder styleSheet = new StringBuilder();
styleSheet.AppendLine(string.Format("/* Generated: {0}, {1} */", DateTime.Now.ToShortDateString(), DateTime.Now.ToLongTimeString()));
context.Response.Write(styleSheet.ToString());
}
}
在我的 web.config 文件中，我有以下内容：
<system.webserver>
<caching enabled="true">
<profiles>
<add extension=".ashx" policy="CacheForTimePeriod" duration="00:01:00" />
</profiles>
</caching>
</system.webserver>
尽管如此，我对 ashx 文件发出的每个请求都会生成一个包含当前日期和时间的新版本。
我做错了什么？
谢谢。
I am trying to enable output caching on all ashx files in my site. I'm trying to keep the server from generating the file on each request - NOT trying to tell the browser to cache the file.
I've distilled my ashx file down to this simple code:
public class DefaultStyles : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/css";
StringBuilder styleSheet = new StringBuilder();
styleSheet.AppendLine(string.Format("/* Generated: {0}, {1} */", DateTime.Now.ToShortDateString(), DateTime.Now.ToLongTimeString()));
context.Response.Write(styleSheet.ToString());
}
}
And in my web.config file, i have this:
<system.webserver>
<caching enabled="true">
<profiles>
<add extension=".ashx" policy="CacheForTimePeriod" duration="00:01:00" />
</profiles>
</caching>
</system.webserver>
Still, every request i make to the ashx file generates a new version with the current date and time in it.
What am i doing wrong?
Thanks.
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也许这会有帮助？
http://objectmix.com/dotnet/393333-output-caching -custom-http-handler.html
这似乎表明，由于您没有使用普通的页面处理程序，因此不会调用输出缓存模块。
西蒙
Maybe this will help?
http://objectmix.com/dotnet/393333-output-caching-custom-http-handler.html
It would seem to suggest that since you're not using the normal page handler, the output caching module isn't invoked.
Simon
实际上我做的一切都是正确的，只是没有在正确的环境中进行测试。当我在 IIS 7 服务器上部署上面的简单示例后，它按照上面的代码按预期工作。应该注意的是，这在我们的 IIS 6 服务器上不起作用。我没有意识到这是一个仅在 IIS 7 中提供的新功能
I was actually doing everything right, just not testing in the right environment. Once i deployed the simple example above on our IIS 7 server, it worked as expected with the code above. It should be noted that this DID NOT work on our IIS 6 server. I had not realized that this was a new feature only available in IIS 7