Let events be the source of truth Anyone who knows me (professionally at least) knows I love event sourcing as a general practice when designing applications. We have been using a modified version of event sourcing at Octopus for a couple of years now to manage our industry processes, which often resemble a conversation between us and multiple third parties.

I was recently working on a project implementing a HTTP REST framework with mutual TLS JWS message encryption, requiring lots of certificate requests. I know I’ll forget this next time I need to do it, so this serves as a note to self.

Smartmeters are great. They save you having to give your energy supplier readings every month and they have flashy screens where you can see your usage in real time, in 30 minute intervals. It doesn’t seem like much now, but using this new technology and data can unlock a whole new way to use the energy system.