Designing an API gateway on a laptop
An allowlist and a token check in front of an API, built in Caddy on a laptop, and the problems that turned up long before production.
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local development
Which env wins depends on the app
Three apps in one stack and three different answers to where a config value really comes from, so the same env setup doesn't behave the same way twice.
Real HTTPS on *.localhost, and the Firefox catch
Cookies and Origin checks only behave like production if the hostnames do, so every local site gets real HTTPS from a local CA, except Firefox has its own idea about which CAs to trust.
Running a whole platform on a laptop from one binary
There was no way to run the whole platform locally, so I wrote a small Go CLI that renders plain docker compose projects from a service catalog, and most of what I learned had nothing to do with compose.