Miniflux is a minimalist and opinionated feed reader:

Written in Go (Golang)
Works only with Postgresql
Doesn't use any ORM
Doesn't use any complicated framework
Use only modern vanilla Javascript (ES6 and Fetch API)
Single binary compiled statically without dependency
The number of features is voluntarily limited
It's simple, fast, lightweight and super easy to install.

Official website: https://miniflux.app