anyone with an idea on hosting an own messaging system? am beta testing a cabs app and gcm is driving me crazy! On Thu, Feb 27, 2014 at 11:15 AM, Emmanuel Ochieng < emmanuelochieng797@gmail.com> wrote:
Hi Bernard,
Thanks for the link, am just amazed by the stats mentioned in the article. High Performance is key for any application. I have always seen that most Developers tend to lean towards meeting user requirements when developing apps and then later forget to finetune their apps to achieve high performamance. This should always be a gradual process.
On another note, I think I should now read about Erlang language and see what makes it "powerful".
On Thu, Feb 27, 2014 at 2:45 AM, Bernard Mwagiru <bmwagiru@gmail.com>wrote:
http://highscalability.com/blog/2014/2/26/the-whatsapp-architecture-facebook...
"Interesting to note Facebook Chat was written in Erlang in 2009, but they went away from it because it was hard to find qualified programmers."
Same year Brian Barton was turned down.
Interesting stats
450 million active users, and reached that number faster than any other company in history.
32 engineers, one developer supports 14 million active users
50 billion messages every day across seven platforms (inbound + outbound)
1+ million people sign up every day
$0 invested in advertising
$8 million investment
Hundreds of nodes
8000 cores
Hundreds of terabytes of RAM
70M Erlang messages per second
In 2011 WhatsApp achieved 1 million established tcp sessions on a single machine with memory and cpu to spare. In 2012 that was pushed to over 2 million tcp connections. In 2013 WhatsApp tweeted out: On Dec 31st we had a new record day: 7B msgs inbound, 11B msgs outbound = 18 billion total messages processed in one day! Happy 2013!!
./bernard
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