Our guest author Karol is the creator of Pubray.com and Heyplay.io. He's a passionate full-stack software engineer with a thing for Elixir, occasional tech blogger, and happy husband and father.
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!