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Then they acquired whatsapp that was written in Erlang.

• ludwigvan 7y ago
  And I think I had read that Whatsapp used Erlang because Facebook Chat was using Erlang and they thought Facebook knew what they were doing and decided to use the same tech. What a twist
  • reducesuffering 7y ago
    Where did you read that? I believe Whatsapp used erlang because they leveraged ejabberd [0] for XMPP. Wouldn't surprise me if this is why FB originally used Erlang for the chat servers too. [0] https://en.wikipedia.org/wiki/Ejabberd https://en.wikipedia.org/wiki/Ejabberd
    • darkr 7y ago
      Yep. Facebook chat was originally based on ejabberd. Source: https://web.archive.org/web/20121224094022/http://cufp.galois.com/2009/slides/PiroLetuchy.pdf https://web.archive.org/web/20121224094022/http://cufp.galoi...
      • fineoldcannibal 7y ago
        I believe it was because of the Beluga acquisition which was in Erlang