Architecture

[vlad-saling]

By Martin Starosta:

BaaS - will be on Firebase where all data will be stored.
Logic - will be Node.js application which will fetch data from multiple APIs (Cryptocompare, Coinmarketcap, Kraken, etc.) and store them in Firebase
Client - will be React or Vue application which will fetch data from BaaS and display on client screen.

Based on research, Firebase will not be correct for storing historical data, etc. We will have own Node server with logic (API) or we will go on cloud (Heroku, cloudno.de,...)

As database we will use PostgreSQL or Couch/MongoDB. Will be investigated.

We can have own BE built with Node/Express. As starter we could use Heroku or other free cloud tier.

For our own history data, we will have PostgreSQL or Couch/Mongo DB (need to take a decision). For user and runtime data, we will go with Firebase, as discussed.