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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Globalization;
using System.Runtime.Caching;
using Microsoft.Internal.Web.Utils;
namespace System.Web.Helpers
{
public static class WebCache
{
public static void Set(string key, object value, int minutesToCache = 20, bool slidingExpiration = true)
{
if (minutesToCache <= 0)
{
throw new ArgumentOutOfRangeException("minutesToCache",
String.Format(CultureInfo.CurrentCulture, CommonResources.Argument_Must_Be_GreaterThan, 0));
}
else if (slidingExpiration && (minutesToCache > 365 * 24 * 60))
{
// For sliding expiration policies, MemoryCache has a time limit of 365 days.
throw new ArgumentOutOfRangeException("minutesToCache",
String.Format(CultureInfo.CurrentCulture, CommonResources.Argument_Must_Be_LessThanOrEqualTo, 365 * 24 * 60));
}
CacheItemPolicy policy = new CacheItemPolicy();
TimeSpan expireTime = new TimeSpan(0, minutesToCache, 0);
if (slidingExpiration)
{
policy.SlidingExpiration = expireTime;
}
else
{
policy.AbsoluteExpiration = DateTimeOffset.Now.AddMinutes(minutesToCache);
}
MemoryCache.Default.Set(key, value, policy);
}
public static dynamic Get(string key)
{
return MemoryCache.Default.Get(key);
}
public static dynamic Remove(string key)
{
return MemoryCache.Default.Remove(key);
}
}
}
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