Firebase can be both used from the client (eg: Web, mobile apps), but also from the backend (eg: NodeJS). You may query directly Firebase over the network, right from your backend, but you should avoid doing this because it is really slow at scale .
Firebase can be both used from the client (eg: Web, mobile apps), but also from the backend (eg: NodeJS). You may query directly Firebase over the network, right from your backend, but you should avoid doing this because it is really slow at scale .