azure - Redis 接続が c# で終了しない場合がある

Question

Azure Redis に接続すると、redis サーバーへの開いている接続の数が表示されます。すべての Redis セットと取得を囲む次の c# コードがあります。これは接続のリークでしょうか?

       using (var connectionMultiplexer = ConnectionMultiplexer.Connect(connectionString))
        {

            lock (Locker)
            {
                redis = connectionMultiplexer.GetDatabase();
            }

            var o = CacheSerializer.Deserialize<T>(redis.StringGet(cacheKeyName));
            if (o != null)
            {
                return o;
            }
            lock (Locker)
            {
                // get lock but release if it takes more than 60 seconds to complete to avoid deadlock if this app crashes before release
                //using (redis.AcquireLock(cacheKeyName + "-lock", TimeSpan.FromSeconds(60)))

                var lockKey = cacheKeyName + "-lock";
                if (redis.LockTake(lockKey, Environment.MachineName, TimeSpan.FromSeconds(10)))
                {
                    try
                    {
                        o = CacheSerializer.Deserialize<T>(redis.StringGet(cacheKeyName));
                        if (o == null)
                        {
                            o = func();
                            redis.StringSet(cacheKeyName, CacheSerializer.Serialize(o),
                                TimeSpan.FromSeconds(cacheTimeOutSeconds));
                        }
                        redis.LockRelease(lockKey, Environment.MachineName);
                        return o;
                    }
                    finally
                    {
                        redis.LockRelease(lockKey, Environment.MachineName);
                    }
                }
                return o;
            }

        }
    }