Redux Saga
Redux Saga is a middleware library for Redux that helps manage side effects (e.g., asynchronous operations like API calls, data fetching, and impure functions) in JavaScript applications. It uses ES6 Generators to make asynchronous code look synchronous and easier to test, providing a more structured way to handle complex application logic. It integrates seamlessly with Redux to coordinate actions and state updates in a predictable manner.
Developers should learn Redux Saga when building Redux-based applications that require handling complex asynchronous workflows, such as data fetching, polling, or managing multiple API calls with dependencies. It is particularly useful in scenarios where you need fine-grained control over side effects, like handling race conditions, debouncing, or implementing retry logic, making it ideal for enterprise-level or data-intensive applications.