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The brilliance wasn't in building the core software but rather leveraging the right technology for scalable low cost messaging. WhatsApp's core messaging infras
by jeffnappi 6y ago
The brilliance wasn't in building the core software but rather leveraging the right technology for scalable low cost messaging. WhatsApp's core messaging infrastructure is built on top of a modified version of the open source project Ejabberd. The technology heavy lifting has largely been done by Erlang and Ejabberd. In my opinion WhatsApp was brilliant to leverage those existing systems - but it wasn't the computer science skills that made them successful.
- brutus1213 6y agoI thought they did some fine tuning to the BEAM VM to get an extreme amount of scale. I didn't know people had Ejabberd deployments at such high scale (2 million+ concurrent connections per server) in that time period. I never got into details of scaling XMPP so you might be right.