/// <summary>
/// Get the specified cacheKey.
/// </summary>
/// <returns>The get.</returns>
/// <param name="cacheKey">Cache key.</param>
/// <typeparam name="T">The 1st type parameter.</typeparam>
public override CacheValue <T> BaseGet <T>(string cacheKey)
{
ArgumentCheck.NotNullOrWhiteSpace(cacheKey, nameof(cacheKey));
var result = ConvertFromStoredValue <T>(_memcachedClient.Get(this.HandleCacheKey(cacheKey)));
if (result.HasValue)
{
OnCacheHit(cacheKey);
}
else
{
OnCacheMiss(cacheKey);
}
return(result);
}
/// <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));
if (_memcachedClient.Get(this.HandleCacheKey(cacheKey)) is T result)
{
CacheStats.OnHit();
if (_options.EnableLogging)
{
_logger?.LogInformation($"Cache Hit : cachekey = {cacheKey}");
}
return(new CacheValue <T>(result, true));
}
CacheStats.OnMiss();
if (_options.EnableLogging)
{
_logger?.LogInformation($"Cache Missed : cachekey = {cacheKey}");
}
var flag = _memcachedClient.Store(Enyim.Caching.Memcached.StoreMode.Add, this.HandleCacheKey($"{cacheKey}_Lock"), 1, TimeSpan.FromMilliseconds(_options.LockMs));
if (!flag)
{
System.Threading.Thread.Sleep(_options.SleepMs);
return(Get(cacheKey, dataRetriever, expiration));
}
var item = dataRetriever();
if (item != null)
{
this.Set(cacheKey, item, expiration);
_memcachedClient.Remove(this.HandleCacheKey($"{cacheKey}_Lock"));
return(new CacheValue <T>(item, true));
}
else
{
_memcachedClient.Remove(this.HandleCacheKey($"{cacheKey}_Lock"));
return(CacheValue <T> .NoValue);
}
}
/// <summary>
/// Get the specified cacheKey, dataRetriever and expiration.
/// </summary>
/// <returns>The get.</returns>
/// <param name="cacheKey">Cache key.</param>
/// <param name="dataRetriever">Data retriever.</param>
/// <param name="expiration">Expiration.</param>
/// <typeparam name="T">The 1st type parameter.</typeparam>
public CacheValue <T> Get <T>(string cacheKey, Func <T> dataRetriever, TimeSpan expiration)
{
ArgumentCheck.NotNullOrWhiteSpace(cacheKey, nameof(cacheKey));
ArgumentCheck.NotNegativeOrZero(expiration, nameof(expiration));
if (_memcachedClient.Get(this.HandleCacheKey(cacheKey)) is T result)
{
CacheStats.OnHit();
if (_options.EnableLogging)
{
_logger?.LogInformation($"Cache Hit : cachekey = {cacheKey}");
}
return(new CacheValue <T>(result, true));
}
CacheStats.OnMiss();
if (_options.EnableLogging)
{
_logger?.LogInformation($"Cache Missed : cachekey = {cacheKey}");
}
var item = dataRetriever();
if (item != null)
{
this.Set(cacheKey, item, expiration);
return(new CacheValue <T>(item, true));
}
else
{
return(CacheValue <T> .NoValue);
}
}