wtf is redux?

Redux is a library that helps you manage how your app's data changes over time. Instead of letting data get scattered and mutated randomly throughout your app, Redux gives you a single organized way to track every change. When you click a button or fetch data, Redux records exactly what happened and how the state shifted, making it predictable and easier to debug. The core idea is simple: your app has one central "store" that holds all its state. When something happens (a user clicks, data loads, etc.), you dispatch an action, a plain object describing what occurred. That action flows to "stores," which are pure functions that take the current state and the action, then return the new state. Your React components subscribe to this store and automatically re-render when it changes. Because everything flows in one direction and state is never secretly mutated, you can easily trace what led to any given state. What makes Redux unusual for 2015 is its obsession with hot reloading. As you edit your code, Redux lets you swap out your store and action logic without losing the current state of your app, you keep clicking buttons and see changes instantly. This massively speeds up development because you don't lose your place or have to manually recreate app state to test something. You'd use Redux if you're building a React app that needs to manage complex, changing data, a dashboard with real-time updates, a chat interface, or a collaborative editing tool. The README warns this is experimental and not production-ready yet, and the API might shift. But it shows a demo of a simple counter app and provides enough examples (actions, stores, and smart/dumb components) to understand how to structure a real application.