public bool AddToCache(TV cacheKey, TU value)
{
var cachedResult = new CacheDataObject <TU>
{
Usage = 1, //value == null ? 1 : value.Usage + 1,
Value = value,
Timestamp = DateTime.UtcNow
};
_cache.AddOrUpdate(cacheKey, cachedResult, (_, __) => cachedResult);
if (_cache.Count > MaxSize)
{
foreach (var source in _cache
.OrderByDescending(x => x.Value.Usage)
.ThenBy(x => x.Value.Timestamp)
.Skip(MaxSize - CleanSize))
{
if (EqualityComparer <TV> .Default.Equals(source.Key, cacheKey))
{
continue; // we don't want to remove the one we just added
}
CacheDataObject <TU> ignored;
_cache.TryRemove(source.Key, out ignored);
}
}
return(true);
}
public bool AddToCache(TV cacheKey, TU value)
{
var cachedResult = new CacheDataObject <TU>
{
Usage = 1,
Value = value,
Timestamp = DateTime.UtcNow
};
_cache.AddOrUpdate(cacheKey, cachedResult, (_, __) => cachedResult);
if (_cache.Count > 0 && _cache.Count > CacheMaxSize && !IsCleaning)
{
lock (_lockObject)
{
if (IsCleaning)
{
return(true);
}
try
{
IsCleaning = true;
var cacheArray = _cache.ToArray();
if (cacheArray.Length > 0)
{
var itemsToSkip = CacheMaxSize - CleanSize;
if (itemsToSkip > 10)
{
var items = cacheArray.OrderByDescending(x => x.Value.Usage)
.ThenBy(x => x.Value.Timestamp)
.Skip(itemsToSkip);
if (items.Any())
{
foreach (var source in items)
{
if (source.Key == null || cacheKey == null)
{
continue;
}
if (EqualityComparer <TV> .Default.Equals(source.Key, cacheKey))
{
continue; // we don't want to remove the one we just added
}
CacheDataObject <TU> ignored;
_cache.TryRemove(source.Key, out ignored);
}
}
}
}
}
finally
{
IsCleaning = false;
}
}
}
return(true);
}
