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Redux.js vs Relay: What are the differences?

<Redux.js vs. Relay>

1. **State Management Approach**: Redux.js is primarily a state management library for JavaScript apps, providing a predictable state container that can be used with any UI layer. On the other hand, Relay is a framework developed by Facebook for building data-driven React applications. It is specifically designed to work with GraphQL, offering a declarative data fetching and updating mechanism within the components.
2. **Data Fetching**: In Redux.js, data fetching logic is typically managed within the components or thunks/sagas, where APIs are called directly. In Relay, data fetching is handled declaratively through GraphQL queries defined within the components. Relay manages data-fetching on the client based on the components' data dependencies specified in the queries.
3. **Component Ownership**: In Redux.js, the components are in control of fetching data, handling actions, and updating the store. In Relay, the framework takes ownership of data fetching and updating, allowing components to focus on rendering and specifying their data requirements through GraphQL.
4. **Server Communication**: Redux.js does not impose any specific requirements for server communication. Developers can choose any backend API solution. In contrast, Relay is tightly coupled with GraphQL and requires a GraphQL server to handle the data fetching and updating operations efficiently.
5. **Local State Management**: Redux.js is commonly used for managing both local and global state in applications, enabling developers to have a unified approach to handling state. However, Relay focuses primarily on managing remote data through the GraphQL layer and does not provide direct support for local state management within components.
6. **Community Support**: Redux.js has a large and active community with a wide range of extensions, middleware, and resources available to developers. On the other hand, Relay has a more limited community base, primarily due to its specific focus on GraphQL integration and the learning curve associated with its unique data-fetching mechanism.

In Summary, Redux.js and Relay differ in their approaches to state management, data fetching, component ownership, server communication, local state management, and community support.
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Pros of Redux
  • 191
    State is predictable
  • 150
    Plays well with React and others
  • 126
    State stored in a single object tree
  • 79
    Hot reloading out of the box
  • 74
    Allows for time travel
  • 14
    You can log everything
  • 12
    Great tutorial direct from the creator
  • 7
    Endorsed by the creator of Flux
  • 7
    Test without browser
  • 6
    Easy to debug
  • 3
    Enforces one-way data flow
  • 3
    Granular updates
  • 2
    Blabla
Cons of Redux
  • 13
    Lots of boilerplate
  • 6
    Verbose
  • 5
    Steep learning curve
  • 5
    Design
  • 4
    Steeper learning curve than RxJs
  • 4
    Steeper learning curve than MobX

What is Redux?

It helps you write applications that behave consistently, run in different environments (client, server, and native), and are easy to test. t provides a great experience, such as live code editing combined with a time traveling debugger.

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What are some alternatives to and Redux?
Cycle.js
A functional and reactive JavaScript framework for predictable code
MobX
MobX is a battle tested library that makes state management simple and scalable by transparently applying functional reactive programming (TFRP). React and MobX together are a powerful combination. React renders the application state by providing mechanisms to translate it into a tree of renderable components. MobX provides the mechanism to store and update the application state that React then uses.
Flux
Flux is the application architecture that Facebook uses for building client-side web applications. It complements React's composable view components by utilizing a unidirectional data flow. It's more of a pattern rather than a formal framework, and you can start using Flux immediately without a lot of new code.
React
Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
RxJS
RxJS is a library for reactive programming using Observables, to make it easier to compose asynchronous or callback-based code. This project is a rewrite of Reactive-Extensions/RxJS with better performance, better modularity, better debuggable call stacks, while staying mostly backwards compatible, with some breaking changes that reduce the API surface.
See all alternatives