Roll your own iPython Notebook server with Amazon Web Services (EC2) using their Free Tier.
Customers periodically ask "Why am I getting errors when talking to Redis". The answer is complicated - it could be a client or server side problem. In this article, I am going to talk about client side issues. For server side issues, see here
Clients can see connectivity issues or timeouts for several reason, here are some of the common ones I see: