Learning Redux

The read-only state

In a Redux application, you cannot modify application state directly. The only way to change the state is by dispatching actions:

• This restriction ensures that state changes are predictable. If no action happens, nothing in the application changes.
• Because actions are processed one at a time, we do not have to deal with race conditions.
• Because actions are plain JavaScript objects, they can be easily serialized, logged, stored, and replayed. This makes debugging and testing easy.

A Redux action object (to create a new post) could look like this:

{ type: 'CREATE_POST', user: 'dan', text: 'New post' }