Build a dapp in Go right now. It's not good for modeling complex business problems but if your app is mostly API it's great for self-hosted. Memory management isn't a problem but def more verbose and less "fun" than ruby. If you use SQLite or badger as database it has a great install story- no configuration or docker even really needed. Front end is in Vue and that gets packed into 25mb binary I can run locally on win/Mac or throw on a VPS and run at scale.