Three Principles Redux can be described in three fundamental principles: Single source of truth

getState() Returns the current state tree of

Store In the previous sections, we defined the actions that represent the facts

compose(...functions) Composes functions from right to left. This is a functional programming utility, and is

Middleware You've seen middleware in action in the Async Actions example

subscribe(listener) Adds a change listener

Redux FAQ: Code Structure Table of Contents

Reducers Actions describe the fact that something happened, but don't

Beyond combineReducers The combineReducers utility included with Redux is very useful, but is deliberately limited to handle a

Isolating Redux Sub-Apps Consider the case of a “big” app (contained in a