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RxJS vs redux-saga: What are the differences?

Introduction

In this article, we will explore the key differences between RxJS and redux-saga. Both RxJS and redux-saga are popular libraries used in JavaScript for managing asynchronous actions and state in applications. While they serve the same purpose, they differ in their approach and implementation.

  1. Integration: RxJS integrates directly with the application codebase, allowing developers to encapsulate asynchronous logic within the existing code. On the other hand, redux-saga acts as a middleware layer in Redux, providing a separate layer to handle side effects and asynchronous actions.

  2. Conceptual Approach: RxJS follows the reactive programming paradigm, which focuses on data streams and transformations using observable sequences. It provides a rich set of operators and allows developers to express complex asynchronous logic through a declarative approach. In contrast, redux-saga utilizes generator functions and provides a more imperative approach to managing side effects and asynchronous actions.

  3. Complexity: RxJS can be considered more complex to learn and understand, mainly due to its extensive set of operators, concepts like observables, and reactive programming concepts. Redux-saga, although it has its learning curve, offers a simpler and more sequential style of managing side effects.

  4. Debugging: Debugging RxJS code can be challenging as it involves manipulating streams of data and observing their transformations over time. Redux-saga, being based on generator functions, allows for easier debugging by stepping through the generator functions in a synchronous manner.

  5. Support for Time-based Operations: RxJS provides built-in support for handling time-based operations such as debouncing, throttling, and time windows. These capabilities make it suitable for scenarios like real-time data handling and event-driven applications. Redux-saga, on the other hand, does not have built-in support for time-based operations but can still be integrated with libraries like redux-saga-throttle-debounce for similar functionality.

  6. Compatibility: RxJS is a library that can be used independently in any JavaScript project, regardless of the framework or architecture. It can be used with or without Redux. In contrast, redux-saga is specifically designed for use with Redux and relies on its store and action concepts.

In summary, the key differences between RxJS and redux-saga lie in their integration approach, conceptual approach, complexity, debugging capabilities, support for time-based operations, and compatibility with different frameworks/architectures.

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Pros of redux-saga
Pros of RxJS
  • 7
    Easy to test
  • 1
    Easy to learn
  • 6
    Easier async data chaining and combining
  • 3
    Steep learning curve, but offers predictable operations
  • 2
    Observable subjects
  • 2
    Ability to build your own stream
  • 2
    Works great with any state management implementation
  • 2
    Easier testing
  • 1
    Lot of build-in operators
  • 1
    Simplifies state management
  • 1
    Great for push based architecture
  • 1
    Documentation

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Cons of redux-saga
Cons of RxJS
    Be the first to leave a con
    • 3
      Steep learning curve

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    What is redux-saga?

    An alternative side effect model for Redux apps

    What is 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.

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    What companies use redux-saga?
    What companies use RxJS?
    See which teams inside your own company are using redux-saga or RxJS.
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    What tools integrate with redux-saga?
    What tools integrate with RxJS?
    What are some alternatives to redux-saga and RxJS?
    redux-thunk
    Redux Thunk middleware allows you to write action creators that return a function instead of an action. The thunk can be used to delay the dispatch of an action, or to dispatch only if a certain condition is met. The inner function receives the store methods dispatch and getState as parameters.
    GraphQL
    GraphQL is a data query language and runtime designed and used at Facebook to request and deliver data to mobile and web apps since 2012.
    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.
    Redux Observable
    It allows developers to dispatch a function that returns an observable, promise or iterable of action(s). Compose and cancel async actions to create side effects and more.
    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.
    See all alternatives