/// <summary>
/// Get the specified cacheKey, dataRetriever and expiration.
/// </summary>
/// <returns>The get.</returns>
/// <param name="cacheKey">Cache key.</param>
/// <param name="dataRetriever">Data retriever.</param>
/// <param name="expiration">Expiration.</param>
/// <typeparam name="T">The 1st type parameter.</typeparam>
public override CacheValue <T> BaseGet <T>(string cacheKey, Func <T> dataRetriever, TimeSpan expiration)
{
ArgumentCheck.NotNullOrWhiteSpace(cacheKey, nameof(cacheKey));
ArgumentCheck.NotNegativeOrZero(expiration, nameof(expiration));
////mutex key
//Lock(cacheKey);
var result = _cache.Get <T>(cacheKey);
if (result.HasValue)
{
if (_options.EnableLogging)
{
_logger?.LogInformation($"Cache Hit : cachekey = {cacheKey}");
}
CacheStats.OnHit();
return(result);
}
CacheStats.OnMiss();
if (_options.EnableLogging)
{
_logger?.LogInformation($"Cache Missed : cachekey = {cacheKey}");
}
if (!_cache.Add($"{cacheKey}_Lock", 1, TimeSpan.FromMilliseconds(_options.LockMs)))
{
System.Threading.Thread.Sleep(_options.SleepMs);
return(Get(cacheKey, dataRetriever, expiration));
}
var res = dataRetriever();
if (res != null)
{
Set(cacheKey, res, expiration);
//remove mutex key
_cache.Remove($"{cacheKey}_Lock");
return(new CacheValue <T>(res, true));
}
else
{
//remove mutex key
_cache.Remove($"{cacheKey}_Lock");
return(CacheValue <T> .NoValue);
}
}
public bool TrySet <T>(string cacheKey, T cacheValue, TimeSpan expiration)
{
if (string.IsNullOrWhiteSpace(cacheKey))
{
throw new ArgumentNullException(nameof(cacheKey));
}
if (cacheValue == null)
{
throw new ArgumentNullException(nameof(cacheValue));
}
return(_cache.Add(cacheKey, cacheValue, expiration));
}
/// <summary>
/// Get the specified cacheKey, dataRetriever and expiration.
/// </summary>
/// <returns>The get.</returns>
/// <param name="cacheKey">Cache key.</param>
/// <param name="dataRetriever">Data retriever.</param>
/// <param name="expiration">Expiration.</param>
/// <typeparam name="T">The 1st type parameter.</typeparam>
public override CacheValue <T> BaseGet <T>(string cacheKey, Func <T> dataRetriever, TimeSpan expiration)
{
ArgumentCheck.NotNullOrWhiteSpace(cacheKey, nameof(cacheKey));
ArgumentCheck.NotNegativeOrZero(expiration, nameof(expiration));
////mutex key
//Lock(cacheKey);
var result = _cache.Get <T>(cacheKey);
if (result.HasValue)
{
OnCacheMiss(cacheKey);
return(result);
}
OnCacheMiss(cacheKey);
if (!_cache.Add($"{cacheKey}_Lock", 1, TimeSpan.FromMilliseconds(_options.LockMs)))
{
System.Threading.Thread.Sleep(_options.SleepMs);
return(Get(cacheKey, dataRetriever, expiration));
}
var res = dataRetriever();
if (res != null || _options.CacheNulls)
{
Set(cacheKey, res, expiration);
//remove mutex key
_cache.Remove($"{cacheKey}_Lock");
return(new CacheValue <T>(res, true));
}
else
{
//remove mutex key
_cache.Remove($"{cacheKey}_Lock");
return(CacheValue <T> .NoValue);
}
}