Redis ConnectionMultiplexer

Scenario:

Stackexchange.Redis.ConnectionMultiplexer hides the details of multiple servers and  shared and reused between callers. It is thread-safe and ready for this usage.

Solution:

1. 
   

 

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private TResult SendData<TResult>(Func<ConnectionMultiplexer, TResult> call)
        {
            _lock.EnterReadLock();
            try
            {
                if (_redis != null)
                {
                    return call(_redis);
                }
            }
            finally
            {
                _lock.ExitReadLock();
            }

            _lock.EnterWriteLock();
            try
            {
                if (_redis != null)
                {
                    return call(_redis);
                }

                _redis =
                    ConnectionMultiplexer.Connect(
                        $"{string.Join(",", Servers.Select(c => $"{c.Server}:{c.Port}"))}{(string.IsNullOrWhiteSpace(ServerOptions) ? "" : $",{.ServerOptions}")}");
                
                _redis.PreserveAsyncOrder = false;

                return call(_redis);
            }
            finally
            {
                _lockSlim.ExitWriteLock();
            }
        }