public async Task <V> Get <K, V>(string cacheConfiguration, Func <Task <V> > creator, string prefix, K key)
{
var versionMappingKey = $"{typeof(K).FullName}-{typeof(V).FullName}";
var configuration = JsonSerializerHelper.Deserialize <KVCacheConfiguration>(cacheConfiguration);
if (!_datas.TryGetValue(prefix, out CacheContainer cacheContainer))
{
await _lock.WaitAsync();
try
{
if (!_datas.TryGetValue(prefix, out cacheContainer))
{
var(versionService, versionname) = getVersionService(configuration, versionMappingKey);
var version = await versionService.GetVersion(versionname);
cacheContainer = new CacheContainer()
{
Version = version, LatestVersionTime = DateTime.UtcNow, CacheDict = new HashLinkedCache <object, CacheValueContainer>()
{
Length = configuration.MaxLength
}
};
_datas[prefix] = cacheContainer;
}
}
finally
{
_lock.Release();
}
}
else
{
if ((DateTime.UtcNow - cacheContainer.LatestVersionTime).TotalSeconds > configuration.VersionCallTimeout)
{
await _lock.WaitAsync();
try
{
if ((DateTime.UtcNow - cacheContainer.LatestVersionTime).TotalSeconds > configuration.VersionCallTimeout)
{
var(versionService, versionname) = getVersionService(configuration, versionMappingKey);
var version = await versionService.GetVersion(versionname);
if (version != cacheContainer.Version)
{
cacheContainer = new CacheContainer()
{
Version = version, LatestVersionTime = DateTime.UtcNow, CacheDict = new HashLinkedCache <object, CacheValueContainer>()
{
Length = configuration.MaxLength
}
};
_datas[prefix] = cacheContainer;
}
else
{
cacheContainer.LatestVersionTime = DateTime.UtcNow;
}
}
}
finally
{
_lock.Release();
}
}
}
var valueItem = cacheContainer.CacheDict.GetValue(key);
if (valueItem == null)
{
await cacheContainer.SyncOperate(
async() =>
{
valueItem = cacheContainer.CacheDict.GetValue(key);
if (valueItem == null)
{
var cacheValue = await creator();
valueItem = new CacheValueContainer()
{
Value = cacheValue
};
cacheContainer.CacheDict.SetValue(key, valueItem);
}
}
);
}
return((V)valueItem.Value);
}
public void SetSync <K, V>(string cacheConfiguration, string prefix, K key, V value)
{
var versionMappingKey = $"{typeof(K).FullName}-{typeof(V).FullName}";
var configuration = JsonSerializerHelper.Deserialize <KVCacheConfiguration>(cacheConfiguration);
if (!_datas.TryGetValue(prefix, out CacheContainer cacheContainer))
{
_lock.Wait();
try
{
if (!_datas.TryGetValue(prefix, out cacheContainer))
{
var(versionService, versionname) = getVersionService(configuration, versionMappingKey);
var version = versionService.GetVersionSync(versionname);
cacheContainer = new CacheContainer()
{
Version = version, LatestVersionTime = DateTime.UtcNow, CacheDict = new HashLinkedCache <object, CacheValueContainer>()
{
Length = configuration.MaxLength
}
};
_datas[prefix] = cacheContainer;
}
}
finally
{
_lock.Release();
}
}
else
{
if ((DateTime.UtcNow - cacheContainer.LatestVersionTime).TotalSeconds > configuration.VersionCallTimeout)
{
_lock.Wait();
try
{
if ((DateTime.UtcNow - cacheContainer.LatestVersionTime).TotalSeconds > configuration.VersionCallTimeout)
{
var(versionService, versionname) = getVersionService(configuration, versionMappingKey);
var version = versionService.GetVersionSync(versionname);
if (version != cacheContainer.Version)
{
cacheContainer = new CacheContainer()
{
Version = version, LatestVersionTime = DateTime.UtcNow, CacheDict = new HashLinkedCache <object, CacheValueContainer>()
{
Length = configuration.MaxLength
}
};
_datas[prefix] = cacheContainer;
}
else
{
cacheContainer.LatestVersionTime = DateTime.UtcNow;
}
}
}
finally
{
_lock.Release();
}
}
}
var valueItem = new CacheValueContainer()
{
Value = value
};
cacheContainer.CacheDict.SetValue(key, valueItem);
}
