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Guest author Peter Ohler creates quite a bit of high-performance code, and writes about it too, every now and then. He made the Agoo gem, which is a pretty cool high-performance HTTP server.
AppSignal provides insights for Ruby, Rails, Elixir, Phoenix, Node.js, Express and many other frameworks and libraries. We are located in beautiful Amsterdam. We love stroopwafels. If you do too, let us know. We might send you some!