/// <summary>
/// 获取当前请求的缓存策略
/// </summary>
/// <param name="context">当前请求的 MVC 上下文</param>
/// <param name="action">请求的 Action</param>
/// <param name="parameters">Action 的参数信息</param>
/// <returns></returns>
public static CachePolicy CreateCachePolicy(ControllerContext context, ActionDescriptor action, IDictionary <string, object> parameters)
{
lock ( _cachePolicyProvidersSync )
{
foreach (var provider in CachePolicyProviders)
{
var policy = provider.CreateCachePolicy(context, action, parameters);
if (policy != null)
{
return(policy);
}
}
return(DefaultCachePolicyProvider.CreateCachePolicy(context, action, parameters));
}
}
static DefaultCachePolicyProvider()
{
CacheKeyPolicy = CacheKeyPolicy.NoCache;
CacheDuration = new TimeSpan(0);
Instance = new DefaultCachePolicyProvider();
}