What is flux and Redux in angular?

Redux preserves all the benefits of Flux (recording and replaying of actions, unidirectional data flow, dependent mutations) and adds new benefits (easy undo-redo, hot reloading) without introducing Dispatcher and store registration.8 Eyl 2015

Redux uses a unidirectional data flow similar to Flux , but it has a single store which is changed by cloning the original store and applying some functions without side effects. … Redux is an application architecture inspired by Facebook Flux and Elm.

Flux is an application architecture that Facebook uses internally for building the client-side web application with React . It is not a library nor a framework. It is neither a library nor a framework. It is a kind of architecture that complements React as view and follows the concept of Unidirectional Data Flow model.