Science Knowings: JavaScript Course For Social Media


State Management Recap

Hey there! In our previous session, we explored state management with Redux. Let's dive deeper into Redux and its features.

What is Redux?

Redux is a state management library for JavaScript applications. It helps you manage the application state consistently and predictably.

Problems Redux Solves

Redux addresses challenges like:

  • Centralized state management
  • Predictable state updates
  • Debugging and time-traveling capabilities

Redux Architecture

Redux follows a unidirectional data flow architecture:

Actions -> Reducers -> Store -> Components

Redux Toolkit

Redux Toolkit simplifies Redux setup. It provides:

  • Pre-configured store
  • Action creators and reducers
  • Redux DevTools integration

Installing Redux

npm install redux

Creating a Redux Store

const store = createStore(rootReducer);

Redux Actions

Actions are plain JavaScript objects that describe what happened in the application.

Redux Reducers

Reducers are pure functions that take the current state and an action, and return a new state.

Redux Selectors

Selectors are memoized functions that extract specific data from the Redux store.

Redux Middleware

Middleware are functions that intercept actions and allow you to perform asynchronous operations.

Redux Thunks

Thunks are middleware functions that allow you to dispatch actions asynchronously.

Redux Sagas

Sagas are middleware functions that provide a more powerful way to handle side effects and manage complex asynchronous logic.

Redux DevTools

Redux DevTools is a browser extension that helps you debug your Redux applications.

Redux Best Practices

Best practices for using Redux include:

  • Keep the store small and normalized
  • Use immutable state
  • Create reusable selectors

Next Topic: Flux Architecture

In the next session, we will explore Flux Architecture, an alternative to Redux. Follow us to learn about its benefits and similarities with Redux!