the article (and others) have crazy stories about scale in WhatsApp (70 million messages a second (from a few years ago)).
Erlang (and Elixir) are perfect for this scale and high reliability challenge. But, its corporate decision, so it might wind up being rewritten in some idiotic language. Or, more likely, it will be a hodgepodge of micro services written in different languages and glued together with HAProxie (or whatever).
http://highscalability.com/blog/2014/2/26/the-whatsapp-archi...
the article (and others) have crazy stories about scale in WhatsApp (70 million messages a second (from a few years ago)).
Erlang (and Elixir) are perfect for this scale and high reliability challenge. But, its corporate decision, so it might wind up being rewritten in some idiotic language. Or, more likely, it will be a hodgepodge of micro services written in different languages and glued together with HAProxie (or whatever).