Image by Annie Ruygt We’re Fly.io, a security bearer token company with a public cloud problem. You can read more about what our platform does (Docker container goes in, virtual machine in Singapore comes out), but this is just an engineering deep-dive into how we make our security tokens work. It’s a tokens nerd post.1 We’ve spent too much time talking about security tokens, and about Macaroon tokens in particular. Writing another Macaroon treatise was not on my calendar. But we’re in the proce...