Redux - Predictable state container for JavaScript apps

Redux is a predictable state container for JavaScript apps. It helps you write applications that behave consistently, run in different environments (client, server, and native), and are easy to test. On top of that, it provides a great developer experience, such as live code editing combined with a time traveling debugger.

Redux is most useful in cases when:

• You have large amounts of application state that are needed in many places in the app
• The app state is updated frequently
• The logic to update that state may be complex
• The app has a medium or large-sized codebase, and might be worked on by many people
• You need to see how that state is being updated over time