![]() ![]() When data coming from multiple endpoints influence single component/view.For example logging actions, error reporting, dispatching other requests depending on the server’s response, etc. If you need to use middleware for various purposes.After thinking about your app’s architecture thoroughly, you might consider using these tool in the following cases: When to use Redux?Įven Redux creators and contributors will tell you that you should use Redux implicitly. The same problem as with props (callbacks are props too), but data passes in a different direction – that seems like contrary to the concept of React (since React renders top down). Passing callbacks up through components that don’t need it In the example above data object can be accessed by multiple components without the need for passing it through intermediate components (here, ComponentWrapper). However, you can solve this problem by Context or by changing component composition. Those props just add extra lines of code in components. Passing props through multiple components that don’t use it You can replace it with simpler reducer and reuse it (adding a parameter, like paramName). Even if you need Redux in your app, repeating the same pattern in multiple reducers is considered to be a bad practice. If application repeats the pattern “component has rendered and needs fetching data from API to render children/list elements”, we will just repeat calling REQUEST and RECEIVE actions, with nothing in between – that’s a redundancy which can be replaced by simple asynchronous calls. Which problems does Redux solve? Separating “what happened” from “what you need to do” That’s why the first impression that programmers can get is confusion about the tool’s purpose.Ī good example of a course that teaches less trivial material and explains Redux well is “ Advanced React and Redux: 2018 Edition” by Stephen Grider. Redux tutorials usually involve building simple apps/features that could be easily done in Vanilla JS.Therefore, they can’t see which problems Redux was invented to solve (no pain – no gain □ ), what are the alternatives and why they are more efficient/convenient Developers don’t always get the chance to work in a big project without Redux, they are introduced to this technology simultaneously as they start using React.This is understandable – this tool was invented for managing data flow in more complex applications and seems to be an overkill for simple SPAs or websites. The complaint that is often voiced by inexperienced React developers, is that Redux actually complicates their work instead of simplifying it. ![]()
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