[英]Static File Browser Caching for ASP.NET Web Forms Application
We want browser caching on the content from certain folders on the site (images / styles / scripts) and setting them to remain fresh for 7 days.我们希望浏览器缓存网站上某些文件夹中的内容(图像/样式/脚本),并将它们设置为保持新鲜状态 7 天。 Also, we use a CMS called Ektron.
此外,我们使用名为 Ektron 的 CMS。
Here is the code we were using, any ideas as to why this isn't working?这是我们使用的代码,关于为什么这不起作用的任何想法?
From global.asax来自 global.asax
void Application_PreSendRequestHeaders(object sender, EventArgs e)
{
System.Web.HttpCacheability cachelevel = System.Web.HttpCacheability.Private;
if (Request.FilePath.ToLower().StartsWith("/images") || Request.FilePath.ToLower().StartsWith("/styles") ||
Request.FilePath.ToLower().StartsWith("/js") || Request.FilePath.ToLower().StartsWith("/scripts"))
{
cachelevel = System.Web.HttpCacheability.Public;
if (cachelevel == System.Web.HttpCacheability.Public) Response.Cache.SetCacheability(cachelevel);
var staticExtensions = new List<string> { ".js", ".css", ".jpg", ".gif", ".png" };
if (staticExtensions.Any(ext => Request.FilePath.ToLower().EndsWith(ext)))
{
Response.Cache.SetMaxAge(TimeSpan.FromDays(7));
}
}
Don't think Application_PreSendRequestHeaders will not fire for every static content.不要认为 Application_PreSendRequestHeaders 不会为每个静态内容触发。 Instead use the Web.config system.webServer - staticContent - clientCache setting, like this:
而是使用 Web.config system.webServer - staticContent - clientCache 设置,如下所示:
<system.webServer>
<staticContent>
<clientCache cacheControlMaxAge="7.00:00:00" cacheControlMode="UseMaxAge" />
</staticContent>
This will set it to 7 days这会将其设置为 7 天
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