Shared Items – February 17, 2010

  • Mozilla Debates Whether to Trust Chinese CA | Freedom to Tinker
  • February 17, 2010 – It’s amazing when these esoteric technical issues we talked about in grad school turn out to be real-life issues. What if the certificate authority is working in concert with your attacker? How do you know you’re really talking to GMail and not the Chinese Government? It’s still amazing to see this go from grad-student theory to real-life issue.

Shared Items – February 8, 2010

  • How Facebook uses Erlang for real-time chat – Off the Grid!!
  • February 8, 2010 – This is a somewhat old blog post from a Facebook engineer describing how they engineered the chat system in Erlang. It’s notable because it contains a description of a scale testing technique I’ve never heard of before – they did a “dark launch” where real users pages were simulating status update connections and even fake message sending without ever drawing a single element on screen. This seems like a very novel way to get realistic load testing (realistic because it’s real people with real data) but without exposing your users to a system with bugs. Clever!