I use postgres on my raspberry Pi 3B as my development server (along with PostgREST and Nginx) and it has served me faithfully for more than a year. Many people are surprised to see the setup and how fast it is to spin up a backend server. The response time is also pretty good and it's amazing to see such a tiny machine pull off such a feat.
Being able to run self contained postgres with a single command is an easy ergonomic win. You don't necessarily need to be an engineer or write code for containers to be useful.
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