protected override ICacheHolder <TKey, TValue> GetCacheHolder <TKey, TValue>(CachedFuncOptions options)
{
if (options != null)
{
return(new MemoryCacheHolder <TKey, TValue>(MemoryCache.Default, options));
}
return(base.GetCacheHolder <TKey, TValue>(null));
}
public MemoryCacheHolder(IMemoryCache cache, CachedFuncOptions options)
{
_cache = cache;
_options = new MemoryCacheEntryOptions
{
AbsoluteExpiration = options.AbsoluteExpiration,
AbsoluteExpirationRelativeToNow = options.AbsoluteExpirationRelativeToNow,
SlidingExpiration = options.SlidingExpiration
};
}
public MemoryCacheHolder(ObjectCache cache, CachedFuncOptions options)
{
_cache = cache;
if (options.AbsoluteExpirationRelativeToNow != null)
{
if (options.AbsoluteExpiration != null)
{
_optionsFactory = () =>
{
DateTimeOffset abs = DateTimeOffset.Now.Add((TimeSpan)options.AbsoluteExpirationRelativeToNow);
if (abs > options.AbsoluteExpiration)
{
abs = (DateTimeOffset)options.AbsoluteExpiration;
}
var ret = new CacheItemPolicy
{
AbsoluteExpiration = abs,
SlidingExpiration = options.SlidingExpiration ?? default(TimeSpan)
};
return(ret);
};
return;
}
_optionsFactory = () => new CacheItemPolicy
{
AbsoluteExpiration = DateTimeOffset.Now.Add((TimeSpan)options.AbsoluteExpirationRelativeToNow),
SlidingExpiration = options.SlidingExpiration ?? default(TimeSpan)
};
return;
}
CacheItemPolicy po = new CacheItemPolicy
{
AbsoluteExpiration = options.AbsoluteExpiration ?? DateTimeOffset.MaxValue,
SlidingExpiration = options.SlidingExpiration ?? default(TimeSpan)
};
_optionsFactory = () => po;
}