protected virtual void SetCache(HttpResponseBase response, int cacheDuration, params string[] varyByParams)
{
// Cache
if (cacheDuration > 0)
{
DateTime timestamp = DateTime.Now;
HttpCachePolicyBase cache = response.Cache;
int duration = cacheDuration;
cache.SetCacheability(HttpCacheability.Public);
cache.SetAllowResponseInBrowserHistory(true);
cache.SetExpires(timestamp.AddSeconds(duration));
cache.SetMaxAge(new TimeSpan(0, 0, duration));
cache.SetValidUntilExpires(true);
cache.SetLastModified(timestamp);
cache.VaryByHeaders["Accept-Encoding"] = true;
if (varyByParams != null)
{
foreach (var p in varyByParams)
{
cache.VaryByParams[p] = true;
}
}
cache.SetOmitVaryStar(true);
response.AddHeader("Cache-Control", string.Format("public, max-age={0}", cacheDuration));
}
}
public override void OnActionExecuted(ActionExecutedContext filterContext)
{
HttpCachePolicyBase cache = filterContext.HttpContext.Response.Cache;
// 在關閉瀏覽器或者切換使用者時，刪除快取資料 (http://blog.toright.com/posts/3414/初探-http-1-1-cache-機制.html)
cache.SetCacheability(HttpCacheability.Public);
// 在 http response header 裡設 expire time 減少 client 送出 http request (http://fcamel-life.blogspot.tw/2010/06/http-response-header-expire-request.html)
cache.SetExpires(DateTime.Now.AddDays(365)); // HTTP/1.0
// filterContext.HttpContext.Response.Cache.SetValidUntilExpires(true);
cache.SetMaxAge(TimeSpan.FromDays(365)); // HTTP/1.1, Cache-Control: max-age
cache.SetProxyMaxAge(TimeSpan.FromDays(365)); // HTTP/1.1, Cache-Control: s-maxage
cache.SetETagFromFileDependencies();
cache.SetLastModifiedFromFileDependencies();
cache.SetAllowResponseInBrowserHistory(true);
// http://stackoverflow.com/questions/6151292/httpcontext-current-response-cache-setcacheabilityhttpcacheability-nocache-not
// 按下登出按鈕所需要的快取設定
//cache.SetCacheability(HttpCacheability.NoCache);
//cache.SetExpires(DateTime.UtcNow.AddHours(-1));
//cache.SetNoStore();
// http://stackoverflow.com/questions/4078011/how-to-switch-off-caching-for-mvc-requests-but-not-for-static-files-in-iis7
// 關閉 Cache 功能
//cache.SetExpires(DateTime.UtcNow.AddDays(-1));
//cache.SetValidUntilExpires(false);
//cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
//cache.SetCacheability(HttpCacheability.NoCache);
//cache.SetNoStore();
}
public void Apply(HttpCachePolicyBase policy)
{
policy.ThrowIfNull("policy");
if (!_hasPolicy)
{
return;
}
switch (_cacheability)
{
case HttpCacheability.NoCache:
policy.SetCacheability(_allowsServerCaching == true ? HttpCacheability.ServerAndNoCache : HttpCacheability.NoCache);
break;
case HttpCacheability.Private:
policy.SetCacheability(_allowsServerCaching == true ? HttpCacheability.ServerAndPrivate : HttpCacheability.Private);
break;
case HttpCacheability.Public:
policy.SetCacheability(HttpCacheability.Public);
break;
}
if (_noStore == true)
{
policy.SetNoStore();
}
if (_noTransforms == true)
{
policy.SetNoTransforms();
}
if (_clientCacheExpirationUtcTimestamp != null)
{
policy.SetExpires(_clientCacheExpirationUtcTimestamp.Value);
}
if (_clientCacheMaxAge != null)
{
policy.SetMaxAge(_clientCacheMaxAge.Value);
}
if (_allowResponseInBrowserHistory != null)
{
policy.SetAllowResponseInBrowserHistory(_allowResponseInBrowserHistory.Value);
}
if (_eTag != null)
{
policy.SetETag(_eTag);
}
if (_omitVaryStar != null)
{
policy.SetOmitVaryStar(_omitVaryStar.Value);
}
if (_proxyMaxAge != null)
{
policy.SetProxyMaxAge(_proxyMaxAge.Value);
}
if (_revalidation != null)
{
policy.SetRevalidation(_revalidation.Value);
}
}
public override void OnActionExecuted(ActionExecutedContext filterContext)
{
HttpCachePolicyBase cache = filterContext.HttpContext.Response.Cache;
cache.SetCacheability(_cacheability);
cache.SetExpires(DateTime.Now);
cache.SetAllowResponseInBrowserHistory(false);
}
public override void OnResultExecuted(ResultExecutedContext filterContext)
{
HttpCachePolicyBase cache = filterContext.HttpContext.Response.Cache;
cache.SetAllowResponseInBrowserHistory(false);
cache.SetCacheability(HttpCacheability.NoCache);
cache.SetNoStore();
base.OnResultExecuted(filterContext);
}
