Why you should NEVER use Redux with Angular

Key Takeaways

• Redux addresses specific state management challenges in React that don't exist in Angular.
• Angular provides built-in state management through Dependency Injection and services, making Redux unnecessary.
• RxJS in Angular offers reactive programming and pub/sub patterns eliminating the need for Redux's mechanisms.
• Redux can add unnecessary complexity and boilerplate to Angular applications.

Preface: What is Redux?

Redux is a JavaScript library for managing application state, famously solving the "prop drilling" problem in React by using a central store for state management.

What is Prop Drilling?

Both React and Angular use component-based architecture. React handles component data with props, much like Angular uses the @Input decorator. When you need to pass data deep through several layers, it can become cumbersome, hence "prop drilling", which necessitated solutions like Redux in React.

The Case Against Redux in Angular

While Redux streamlines state management in React, it's redundant in Angular due to Angular's comprehensive framework features like Dependency Injection (DI), which inherently manage state effectively across components.

import { Injectable } from '@angular/core';

@Injectable()
export class AppStore {
    userName: 'Sam';

    constructor() {}
}

export class Comp1 {
    constructor(private store: AppStore) {
        this.displayName = store.userName;
    }
}

export class Comp2 {
    constructor(private store: AppStore) {
        this.userName = store.userName;
    }
}

The above DI pattern allows for straightforward state sharing between components, reducing the need for an external Redux store.

RxJS and Reactive Programming

RxJS empowers Angular applications with advanced reactive programming techniques, allowing components to subscribe to data streams with Observables. This mimics Redux's pub/sub model, enhancing Angular's native capabilities without Redux.

Components in Angular already leverage RxJS to react to changes in a way that parallels Redux, making Redux's roles redundant when Angular uses RxJS for asynchronicity and event management.

Boilerplate Concerns with Redux

Implementing Redux involves creating actions, reducers, and a centralized store, which can lead to additional boilerplate. Angular's built-in capabilities through services and RxJS provide a more streamlined approach without this complexity.

Given Angular's efficient state management options, using Redux can clutter your codebase unnecessarily instead of leveraging Angular's service-oriented architecture and RxJS.

Conclusion

The Angular framework natively supports effective state management using DI and RxJS, making Redux an unnecessary addition. Angular’s thoughtful design covering component interaction and state sharing comprehensively reduces the need for external state management solutions like Redux.

In short, Redux is a solution crafted for React-specific challenges and doesn't address problems inherent to Angular, thus is redundant in most Angular projects.

FAQ

Is there any situation where Redux is beneficial in Angular?

While rare, if you're working in a hybrid application sharing code between React and Angular, Redux might provide a consistent state management strategy across both frameworks.

Can I use Redux with new Angular versions?

Yes, you can technically integrate Redux with Angular, even with the latest versions, but it's generally not recommended due to Angular's existing state management capabilities.

What are the best alternatives to Redux in Angular?

Leverage Angular's services with Dependency Injection and utilize RxJS for reactive programming. These native solutions are both powerful and efficient.

Does using Redux improve performance?

In Angular, Redux does not inherently improve performance. Angular's built-in change detection and state management are typically sufficient for maintaining performance.