protected async Task <string> Get(Guid projectId, string key, TimeSpan renewTimeout)
{
object transientTemp;
var cacheKey = CacheExtenstions.ToCacheKey(projectId, key);
if (_transientCache.Count > 0)
{
var value = _transientCache.TryGetValue(cacheKey, out transientTemp) ? (string)transientTemp : (string)null;
return(value);
}
try
{
#if RunSynchronous
var redisValue = _retryStrategy.ExecuteWithRetry(() => Cache.StringGet(cacheKey));
if (redisValue.HasValue)
{
if (renewTimeout != NoTimeout)
{
Cache.KeyExpire(cacheKey, renewTimeout);
}
#if TrackStats
UpdateStats(cacheKey, StatType.Hit);
#endif //TrackStats
}
#else
var redisValue = _retryStrategy.ExecuteWithRetry(() => Cache.StringGetAsync(cacheKey)).Result;
if (redisValue.HasValue)
{
UpdateStats(cacheKey, StatType.Hit);
if (renewTimeout != NoTimeout)
{
var isSuccessful = _retryStrategy.ExecuteWithRetry(() => Cache.KeyExpireAsync(cacheKey, renewTimeout)).Result;
}
}
#endif
else
{
#if TrackStats
UpdateStats(cacheKey, StatType.Miss);
#endif //TrackStats
}
return(redisValue);
}
catch (Exception ex)
{
#if TrackStats
UpdateStats(cacheKey, StatType.GetException, ex);
#endif //TrackStats
if (ex.GetType() == typeof(StackExchange.Redis.RedisConnectionException) || ex.GetType() == typeof(System.NullReferenceException))
{
return(_transientCache.TryGetValue(cacheKey, out transientTemp) ? (string)transientTemp : (string)null);
}
return((string)null);
}
}
protected async Task <bool> Set(Guid projectId, string key, string value, TimeSpan timeout)
{
var cacheKey = CacheExtenstions.ToCacheKey(projectId, key);
if (_transientCache.Count > 0)
{
_transientCache[cacheKey] = value;
return(true);
}
try
{
bool isSuccesful = false;
#if RunSynchronous
if (timeout == NoTimeout)
{
isSuccesful = _retryStrategy.ExecuteWithRetry(() => Cache.StringSet((RedisKey)cacheKey, value) && Cache.KeyPersist((RedisKey)cacheKey));
}
else
{
isSuccesful = _retryStrategy.ExecuteWithRetry(() => Cache.StringSet((RedisKey)cacheKey, value, timeout));
}
#else
if (timeout == NoTimeout)
{
isSuccesful = _retryStrategy.ExecuteWithRetry(() => Cache.StringSetAsync(cacheKey, value).Result&& Cache.KeyPersistAsync(cacheKey).Result);
else
{
isSuccesful = _retryStrategy.ExecuteWithRetry(() => Cache.StringSetAsync(cacheKey, value, timeout).Result);
#endif
#if TrackStats
UpdateStats(cacheKey, isSuccesful ? StatType.Set : StatType.SetFail);
#endif //TrackStats
return(isSuccesful);
}
catch (Exception ex)
{
#if TrackStats
UpdateStats(cacheKey, StatType.SetException, ex);
#endif //TrackStats
if (ex.GetType() == typeof(StackExchange.Redis.RedisConnectionException) || ex.GetType() == typeof(System.NullReferenceException))
{
_transientCache[cacheKey] = value;
return(true);
}
return(false);
}
}
protected void DeleteAllKeys(Guid projectId, string keyPrefix, Action <RedisKey> onDelete = null)
{
if (_transientCache.Count > 0)
{
_transientCache.Clear();
return;
}
var endpoints = Connection.GetEndPoints(true);
foreach (var endpoint in endpoints)
{
var server = Connection.GetServer(endpoint);
var cacheKeyPrefix = CacheExtenstions.ToCacheKey(projectId, keyPrefix);
var cacheKeys = server.Keys(0, cacheKeyPrefix + "*");
foreach (var cacheKey in cacheKeys)
{
_retryStrategy.ExecuteWithRetry(() => Cache.KeyDelete(cacheKey));
onDelete?.Invoke(cacheKey);
}
}
}
protected async void Delete(Guid projectId, string key)
{
var cacheKey = CacheExtenstions.ToCacheKey(projectId, key);
if (_transientCache.Count > 0)
{
_transientCache.Remove(cacheKey);
return;
}
try
{
#if RunSynchronous
_retryStrategy.ExecuteWithRetry(() => Cache.KeyDelete(cacheKey));
#else
var isSuccesful = _retryStrategy.ExecuteWithRetry(() => Cache.KeyDeleteAsync(cacheKey)).Result;
#endif
}
catch (Exception ex)
{
}
}
protected async Task <bool> KeyExists(Guid projectId, string key, TimeSpan renewTimeout)
{
object transientTemp;
var cacheKey = CacheExtenstions.ToCacheKey(projectId, key);
bool exists = false;
try
{
#if RunSynchronous
if (_transientCache.Count > 0)
{
exists = _transientCache.TryGetValue(cacheKey, out transientTemp);
}
else
{
exists = _retryStrategy.ExecuteWithRetry(() => Cache.KeyExists(cacheKey),
(ex, numberOfRetries, remainingRetries) =>
ex.GetType() == typeof(StackExchange.Redis.RedisConnectionException)
? new RetryResponse <bool> {
Action = RetryAction.ReturnResult, Result = false
}
: new RetryResponse <bool> {
Action = RetryAction.ContinueRetrying
});
if (exists)
{
if (renewTimeout != NoTimeout)
{
Cache.KeyExpire(cacheKey, renewTimeout);
}
}
}
#else
exists = _retryStrategy.ExecuteWithRetry(() => Cache.KeyExistsAsync(cacheKey)).Result;
if (exists)
{
if (renewTimeout != NoTimeout)
{
var isSuccesful = _retryStrategy.ExecuteWithRetry(() => Cache.KeyExpireAsync(cacheKey, renewTimeout)).Result;
}
}
#endif
#if TrackStats
UpdateStats(cacheKey, exists ? StatType.ExistHit : StatType.ExistMiss);
#endif //TrackStats
return(exists);
}
catch (Exception ex)
{
#if TrackStats
UpdateStats(cacheKey, StatType.ExistException, ex);
#endif //TrackStats
if (ex.GetType() == typeof(StackExchange.Redis.RedisConnectionException))
{
return(_transientCache.TryGetValue(cacheKey, out transientTemp));
}
return(false);
}
}
