Middleware - sgml/signature GitHub Wiki https://medium.com/better-programming/redux-middleware-in-depth-write-custom-redux-middleware-4f02e2497cd6 https://designingforscale.com/understanding-redux-middleware-and-writing-custom-ones/x https://medium.com/@ethan.reid.roberts/stuck-in-the-middleware-with-you-c667acb01fc