How to determine the required hosting capacity for a site on Angular 5, NodeJS, PostgreSQL?

Question

PostgreSQL

The frontend of the site is made on Angular 5, the backend is nodejs + postgresql.
For the first time, I do not expect a lot of attendance - up to 500 active users per day. If there is more, I will consider options more expensive, if performance requires it. The most painful place - the size of the database is about 10GB. On Heroku, the maintenance of such a database will cost $ 50 per month (Standard 0 https://elements.heroku.com/addons/heroku-postgresql)
I thought about buying raspberry and setting up a home web server. Is it just not clear whether it will pull?
For example https://miniboard.com.ua/boards/272-raspberry-pi-3...
Are there more powerful ones?

Answer 1

For the first time, I do not expect a lot of attendance - up to 500 active users per day.

The weakest solution should be enough, as long as you don't have crazy background server calculations or rendering in there.
With a home server, important criteria for you will be:
1. Stability (permanence / uptime) of the server connection to the Internet network.
2. The congestion of the Internet channel to your server, especially with parallel sessions.
I advise you to take something from IoT solutions for low power consumption and silent operation with standard components: link