2 million connections, one server
How one WhatsApp server held 2,277,845 open connections in January 2012 with CPU to spare, and how, two years later, 32 engineers were behind a service with over 450 million monthly users.
01 · One server
WS · WhatsApp put 2 million connections on one server, and 450 million users on 32 engineers
2,277,845 connections. One server.
2,277,845 connections, one server
January 2012.
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