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MobX vs redux-saga: What are the differences?


In the realm of state management for JavaScript applications, MobX and redux-saga are two popular choices. Despite both serving the purpose of managing state in a predictable and effective manner, they differ in their approaches and implementation.

  1. Synchronization:

One key difference between MobX and redux-saga is how they handle synchronization. MobX utilizes observable data structures to automatically track and propagate changes, ensuring that components are always up to date. On the other hand, redux-saga employs the concept of sagas, which are generator functions that enable complex asynchronous actions to be handled in a clear and manageable way.

  1. Data Flow:

Another distinguishing factor is the data flow within the two libraries. MobX follows a reactive approach, where changes to the state trigger reactions throughout the application. In contrast, redux-saga embraces an imperative style, allowing developers to define the flow of actions explicitly using sagas.

  1. Concurrency Control:

Concurrency control is another area where MobX and redux-saga diverge. MobX excels in handling concurrent state updates effortlessly, as its reactivity system handles dependencies automatically. Conversely, redux-saga provides more control over how asynchronous tasks are executed, allowing for fine-grained management of side effects.

  1. Learning Curve:

The learning curve associated with MobX and redux-saga differs significantly. While MobX is relatively straightforward to grasp, especially for developers accustomed to object-oriented programming, the concept of sagas in redux-saga can be more challenging to understand and implement effectively.

  1. Integration with React:

When it comes to integrating with React applications, MobX and redux-saga offer contrasting approaches. MobX seamlessly integrates with React, providing decorators and hooks for easy state management. On the other hand, redux-saga requires additional setup and boilerplate code to connect with React components, making it a bit more cumbersome in comparison.

  1. Community and Ecosystem:

Lastly, the community and ecosystem surrounding MobX and redux-saga contribute to the overall developer experience. MobX boasts a vibrant community and a plethora of plugins and tools to enhance productivity, whereas redux-saga may have a steeper learning curve due to its more specialized usage, leading to a somewhat smaller ecosystem.

In Summary, MobX excels in synchronization and data flow with a lower learning curve, while redux-saga offers more control over concurrency, side effects, and a specialized approach to handling asynchronous actions.

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Pros of MobX
Pros of redux-saga
  • 26
    It's just stupidly simple, yet so magical
  • 18
    Easier and cleaner than Redux
  • 15
  • 13
    Automagic updates
  • 13
    React integration
  • 10
    Computed properties
  • 8
    ES6 observers and obversables
  • 7
    Global stores
  • 3
    Flexible architecture the requeriment
  • 1
    Has own router package (mobx-router)
  • 7
    Easy to test
  • 1
    Easy to learn

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Cons of MobX
Cons of redux-saga
  • 1
    Be the first to leave a con

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    What is 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.

    What is redux-saga?

    An alternative side effect model for Redux apps

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    What are some alternatives to MobX and redux-saga?
    Relay Framework
    Never again communicate with your data store using an imperative API. Simply declare your data requirements using GraphQL and let Relay figure out how and when to fetch your data.
    It is a JavaScript library that helps you to create rich, responsive display and editor user interfaces with a clean underlying data model. Any time you have sections of UI that update dynamically (e.g., changing depending on the user’s actions or when an external data source changes), it can help you implement it more simply and maintainably.
    GraphQL Cache
    A custom middleware for graphql-ruby that handles key construction and cache reads/writes transparently.
    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.
    Build a universal GraphQL API on top of your existing REST APIs, so you can ship new application features fast without waiting on backend changes.
    See all alternatives