• Rails: How To Migrate S3 Providers Via ActiveStorage Mirroring

    So you want to switch S3 object storage providers in your Rails application.Here’s how you do it! Random context: If you’re building companies in Europe like me, it seems to be a common thing to switch cloud providers – they’re mostly not as good as AWS, and with new offerings coming out regularly, it often…

    Read more

  • How To Find An Alternative Career As a Doctor

    Medical students and doctors often ask me how the hell I managed to leave the hospital and work as a software engineer (and later, founder) instead. We usually would schedule a call and somewhat aimlessly do a Q&A in the optimistic hope of the other person asking me good questions, and the even more optimistic…

    Read more

  • Using Hetzner S3 Object Storage in Rails

    Hetzner recently launched their S3-compatible object storage. Like many other Hetzner services, their object storage offering looks really interesting because it’s significantly less expensive than the competition, especially AWS – the initial pricing suggests it’s ~4x cheaper for storage, and ~50x (!) cheaper for traffic. Let’s look how you can use it in Ruby on…

    Read more

  • Acarbose: Life-Changing Farts You Will Remember

    As with some of my self-experiments, Acarbose is one of those where I can’t remember my reason for starting it. I think it was some sort of simplified cave man reasoning ™ along the lines of “Acarbose.. modifies gut bacteria.. good.. must try.. walking to pharmacy now.. showing doctor’s ID.. thank you”. And so it…

    Read more

  • All My Hacks For Founding a Company In Germany (And Running It)

    I’ve been running OpenRegulatory for ~5 years now. It’s profitable, there are five people working here, and I bootstrapped all of it, so I still own 100% of the company, with zero investors. Cool, great, well done dude, blablabla.. Anyway, in the meantime, a few people approached me on how to found a company in…

    Read more

  • Vitamin B12: You Should Probably Be Injecting Hydroxocobalamin

    Vitamin B12 (cobalamin) is an interesting one, because many people (including doctors, and including me until recently!) don’t know much about it. Let’s take a look, and let me explain why you might want to be injecting hydroxocobalamin. But let’s not get ahead of ourselves! Before we get started: What the hell is Vitamin B12?…

    Read more