[earthboundkid]

Lately, I've switched from doing mostly Python to mostly Go, and I've fallen in love with the Flags-First https://github.com/peterbourgon/ff approach. Basically, you have three levels of config: a conf file, ENV vars, and CLI flags. As you do local dev, you switch stuff on and off with CLI flags, and then when it's time to promote to prod, you switch to having everything as an ENV var or a secrets file or whatever is easy to do in your hosting system. It's very convenient, and Go's standard flags package gives you a simple way to get strongly typed values out of strings.