I was reading this blog post. It make me wonder how data replication and fail overs handled in case of regional and multi-regional database projects. Article mentions that things are over-simplified a bit. But I hope there is certain truth to the point made in the article about data replication.
So my question is:
Lets say user is writing a social media app, where user in NY wants to look the profile of the user in Sydney.
Case 1: If I am using regional databases for this app (only regional database in every region)
Case 2: If I am using multi-regional databases for US and EU and regional database for others (Asia, Australia)
Is it possible for NY user to view the profile of the Sydney user in case 1, case 2? Is data replicated over continents in regional databases case?
Even if you use multi region databases which only available for US and EU for now. As I understood muti-region only replicated data within the regions of the same continent(NA, EU), not between continents. So how to build social media app to global market using Firestore?
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