redux-saga vs @ngrx/effects vs redux-observable
State Management Middleware Comparison
1 Year
redux-saga@ngrx/effectsredux-observableSimilar Packages:
What's State Management Middleware?

State management middleware libraries are essential tools in modern web applications, particularly those built with frameworks like Angular and React. They facilitate handling side effects, asynchronous actions, and complex state transitions in a predictable manner. Each library offers unique paradigms and patterns for managing these aspects, allowing developers to choose one that best fits their application's architecture and their team's familiarity with the concepts involved.

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redux-saga1,145,75222,551221 kB41a year agoMIT
@ngrx/effects682,7548,118440 kB59a month agoMIT
redux-observable245,2987,83269.1 kB69a year agoMIT
Feature Comparison: redux-saga vs @ngrx/effects vs redux-observable

Asynchronous Handling

  • redux-saga:

    redux-saga uses generator functions to manage side effects in a more declarative manner. It allows you to write asynchronous code that looks synchronous, making it easier to read and maintain. Sagas can yield effects like API calls and take actions, providing a clear flow of how side effects should be handled.

  • @ngrx/effects:

    @ngrx/effects provides a straightforward way to handle asynchronous operations, such as HTTP requests, by using observables. Effects listen for dispatched actions and can trigger new actions based on the results of those operations, ensuring a clean separation between side effects and state management.

  • redux-observable:

    redux-observable leverages RxJS to handle asynchronous actions through a powerful and flexible API. It allows developers to compose complex asynchronous flows using operators like map, mergeMap, and switchMap, making it ideal for applications that require intricate handling of streams of actions and events.

Learning Curve

  • redux-saga:

    redux-saga is generally considered to have a higher learning curve compared to the other two libraries. The use of generator functions and the overall saga pattern can be challenging for developers unfamiliar with these concepts. However, once understood, it provides a powerful way to manage complex asynchronous flows.

  • @ngrx/effects:

    The learning curve for @ngrx/effects is moderate, especially for those already familiar with Angular and RxJS. Understanding the concepts of observables and how they integrate with Angular's architecture is essential, but the documentation and community support make it accessible for developers.

  • redux-observable:

    redux-observable has a steeper learning curve due to its reliance on RxJS and functional reactive programming concepts. Developers need to be comfortable with observables and operators to effectively utilize this library, which may require additional time to master for those new to reactive programming.

Integration

  • redux-saga:

    redux-saga is framework-agnostic and can be used with any Redux application. Its design allows for easy integration into existing Redux setups, making it a flexible option for developers who want to manage side effects without being tied to a specific framework.

  • @ngrx/effects:

    @ngrx/effects is designed specifically for Angular applications, providing seamless integration with the Angular ecosystem, including Angular's dependency injection and change detection mechanisms. This makes it a natural choice for Angular developers looking to manage side effects in their applications.

  • redux-observable:

    redux-observable can be integrated into any Redux application, regardless of the framework being used. Its reliance on RxJS makes it a versatile choice for projects that already utilize observables, allowing for a smooth integration into existing codebases.

Testing

  • redux-saga:

    redux-saga offers robust testing capabilities, allowing developers to test sagas in isolation. The generator functions can be stepped through in tests, enabling precise control over the flow of asynchronous actions and making it easier to verify that the correct actions are yielded.

  • @ngrx/effects:

    Testing effects in @ngrx/effects is straightforward due to its reliance on observables. Developers can easily mock actions and test the resulting effects, ensuring that side effects behave as expected. The Angular testing utilities further simplify the process.

  • redux-observable:

    Testing redux-observable can be more complex due to the nature of observables. However, it provides utilities to help with testing epic functions, allowing developers to simulate actions and verify that the correct actions are dispatched in response to those actions.

Community and Ecosystem

  • redux-saga:

    redux-saga has a strong community and is widely used in the Redux ecosystem. It is well-documented, and there are many resources available for developers looking to learn or troubleshoot issues. The community support makes it easier to find solutions and best practices for implementing sagas.

  • @ngrx/effects:

    @ngrx/effects benefits from a strong community and ecosystem within the Angular framework. It is well-documented and widely adopted in Angular applications, making it easier to find resources, tutorials, and community support.

  • redux-observable:

    redux-observable is part of the larger Redux ecosystem and is supported by a community that emphasizes functional programming principles. While it may not be as widely adopted as some other libraries, it has a dedicated user base and a wealth of resources available for learning and troubleshooting.

How to Choose: redux-saga vs @ngrx/effects vs redux-observable
  • redux-saga:

    Choose redux-saga if you need a more structured way to handle side effects using generator functions. It is particularly useful for applications with complex asynchronous logic that may involve multiple steps or require cancellation of ongoing processes. This library is well-suited for projects that benefit from a clear separation of concerns and a more testable approach to side effects.

  • @ngrx/effects:

    Choose @ngrx/effects if you are working within an Angular application and prefer a reactive programming model that integrates seamlessly with the Angular ecosystem. It is ideal for managing side effects in a way that aligns with Angular's change detection and dependency injection systems.

  • redux-observable:

    Choose redux-observable if you favor a functional reactive programming approach and are already using RxJS in your application. This library is suitable for applications that require complex asynchronous flows and want to leverage observables for handling side effects, making it a good fit for projects with a strong emphasis on reactive programming.

README for redux-saga

redux-saga

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