[rusht]

“Best” depends on your use case. I don’t even think a SQL database is an option for a chat app since it’s write heavy. FB Messenger uses HBase and Discord uses Cassandra and they’ve done their research at scale, so those could be possible options.

[mekster]

Which self hosting instance would go at the size of Facebook or Discord? Just because Discord took a method doesn't mean a competing product should too.

[rusht]

I am assuming they want to provide a hosted service just like Discord at some point.