public AssociativeCache(
int way,
int totalCacheCapacity,
ICachePolicyFactory <K, V> cachePolicyFactory = null,
ICacheSetHashCalculator <K, V> hashSetCacluator = null,
AppenderSkeleton appender = null)
{
this.appender = appender ?? new ConsoleAppender();
// Implement as a one way cache
if (way <= 0)
{
LoggingUtility.LogData(this.appender, "Number of cache sets cannot be 0 or negative", Level.Fatal);
throw new ArgumentOutOfRangeException("Number of cache sets cannot be 0 or negative", "way");
}
if (totalCacheCapacity <= 0)
{
LoggingUtility.LogData(this.appender, "Number of cache sets cannot be 0 or negative", Level.Fatal);
throw new ArgumentOutOfRangeException("Number of cache sets cannot be 0 or negative", "totalCacheCapacity");
}
this.cachePolicyFactory = cachePolicyFactory;
this.cacheSetLookUp = new Dictionary <int, CacheSet <K, V> >();
this.cachePolicyFactory = cachePolicyFactory ?? new LRUPolicyFactory <K, V>();
this.hashSetCalculator = hashSetCalculator ?? new DefaultCacheSetHashCalculator <K, V>(way);
for (int i = 0; i < way; i++)
{
this.cacheSetLookUp.Add(i, new CacheSet <K, V>(this.cachePolicyFactory.CreatePolicy(), totalCacheCapacity / way, this.appender));
}
}
public void Clear()
{
try
{
foreach (CacheSet <K, V> cacheSet in cacheSetLookUp.Values)
{
cacheSet.Clear();
}
}
catch (Exception ex)
{
LoggingUtility.LogData(appender, ex.Message, Level.Fatal);
throw;
}
}
public void Remove(K key)
{
try
{
int setIndex = this.hashSetCalculator.GetSetIndex(key);
CacheSet <K, V> cacheSet = cacheSetLookUp[setIndex];
cacheSet.RemoveItemFromCacheSet(key);
LoggingUtility.LogData(appender, $"Adding CacheIem in {setIndex} cache set", Level.Trace);
}
catch (Exception ex)
{
LoggingUtility.LogData(appender, ex.Message, Level.Fatal);
throw;
}
}
public V Get(K key)
{
try
{
int setIndex = this.hashSetCalculator.GetSetIndex(key);
if (cacheSetLookUp[setIndex] != null)
{
LoggingUtility.LogData(appender, $"Possible cache hit in set {setIndex}", Level.Trace);
return(cacheSetLookUp[setIndex].GetItemFromCacheSet(key));
}
else
{
LoggingUtility.LogData(appender, $"Cache miss in set {setIndex} for key {key}", Level.Trace);
return(default(V));
}
}
catch (Exception ex)
{
LoggingUtility.LogData(appender, ex.Message, Level.Fatal);
throw;
}
}
