Well, author tries to prove it's not. And, btw, oracle is something more than just an external observer, it can be used, for example, to solve the halting problem in classes for which it would be impossible with nondeterministic machines.
That's why DigitalOcean isn't ready for production (unless hiding ip address behind, lets say, cloudflare is an option in your case) and that's why I decided not to use their services anymore.
That's nice, I also thought about mechanism like this. For example, let's store images representing some binary data in audio files. We would need much redundant data for recovery then. Most of popular audio codes were created for storing music or voice, it would be hard to store binary data within them. I need to do some tests. Thanks.
This reboot is forced, we had over 3k requests with no hanging of whatsoever. It just helps when traffic is huge. This particular chip (serving linked website) is running at 80Mhz.
Sorry, during that time I had modem-related issues. ESP8266 was up for the whole time, but it wasn't accessible. Yep, it's the example from repository (slightly modified, I added some new features to prevent crashing under yesterday's big load from Reddit).