Redux Observable vs Zustand: What are the differences?

Introduction

In the world of web development, there are various state management libraries available that help in managing the complexities of application state. Two popular options are Redux Observable and Zustand. While both aim to solve state management challenges, they have some key differences that set them apart. In this comparison, we will explore the differences between Redux Observable and Zustand.

1. Scalability: Redux Observable is known for its scalability as it is built on top of Redux. It leverages the powerful concepts of observables and allows developers to handle asynchronous actions effectively. On the other hand, Zustand is a lightweight state management library that offers simplicity and a minimal footprint. It is designed to handle smaller applications with a straightforward API.

2. Complexity: Redux Observable can introduce complexity due to the additional concepts it introduces, such as observables and epics. Developers need to understand how to work with these concepts to effectively manage actions and state. In contrast, Zustand provides a simpler and more intuitive API, reducing the learning curve and making it easier to work with.

3. Middleware: Redux Observable heavily relies on middleware, such as redux-observable, to handle the asynchronous nature of actions. Middleware adds an extra layer of complexity and can make the codebase harder to maintain. On the other hand, Zustand does not require any middleware, as it directly manages state within its store. This simplifies the development process and eliminates the need for additional middleware setup.

4. Performance: Redux Observable has the advantage of leveraging the power of observables, which are known for their efficient handling of asynchronous actions. The use of observables can lead to better performance optimization, as it allows for fine-grained control over action dispatching and handling. Zustand, being a simpler state management solution, may have a slight performance advantage due to its lightweight nature.

5. Developer Experience: Redux Observable provides a well-established ecosystem with strong community support. It offers a wide range of libraries, tools, and plugins that enhance the developer experience. Zustand, although less popular, also provides a good developer experience with its simplicity and ease of use. It may be a preferred choice for developers who value a lightweight approach and fewer dependencies.

6. Integration with React: Both Redux Observable and Zustand are well integrated with React. They provide hooks and utilities that allow seamless integration with React components. However, Redux Observable follows the traditional Redux pattern of reducers and actions, making it a better choice for applications that heavily rely on Redux ecosystem and middleware. Zustand, being a self-contained state management library, offers a more straightforward integration approach.

In summary, Redux Observable and Zustand have key differences in terms of scalability, complexity, middleware usage, performance, developer experience, and integration with React. Developers can choose between these two based on the specific requirements of their project, such as the need for scalable architecture, simplicity, or ecosystem support.