public override void Set(string key, object value, CacheItemPolicy policy, string regionName = null)
{
ValidatePolicy(policy);
try
{
DateTime utcExpiry;
if (policy.SlidingExpiration != NoSlidingExpiration)
{
utcExpiry = DateTime.UtcNow + policy.SlidingExpiration;
value = new SlidingExpiryCacheItem(value, policy.SlidingExpiration);
}
else
{
utcExpiry = policy.AbsoluteExpiration.UtcDateTime;
}
cache.Set(key, value, utcExpiry, regionName);
}
catch (Exception e)
{
LogUtility.LogError("Error in Set: " + e.Message);
if (configuration.ThrowOnError)
{
throw;
}
}
}
public override object AddOrGetExisting(string key, object value, CacheItemPolicy policy, string regionName = null)
{
ValidatePolicy(policy);
try
{
DateTime utcExpiry;
if (policy.SlidingExpiration != NoSlidingExpiration)
{
utcExpiry = DateTime.UtcNow + policy.SlidingExpiration;
value = new SlidingExpiryCacheItem(value, policy.SlidingExpiration);
}
else
{
utcExpiry = policy.AbsoluteExpiration.UtcDateTime;
}
object oldValue = cache.AddOrGetExisting(key, value, utcExpiry, regionName);
oldValue = HandleSlidingExpiry(key, oldValue, regionName);
return(oldValue);
}
catch (Exception e)
{
LogUtility.LogError("Error in AddOrGetExisting: " + e.Message);
if (configuration.ThrowOnError)
{
throw;
}
}
return(null);
}
private object HandleSlidingExpiry(string key, object value, string regionName)
{
SlidingExpiryCacheItem item = value as SlidingExpiryCacheItem;
if (item == null)
{
return(value);
}
cache.ResetExpiry(key, DateTime.UtcNow + item.SlidingExpiration, regionName);
return(item.Value);
}
