Redux is an
open-source
Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized sof ...
JavaScript library A JavaScript library is a library of pre-written JavaScript code that allows for easier development of JavaScript-based applications, especially for AJAX and other web-centric technologies.
Libraries
With the expanded demands for JavaScript, an ea ...
for managing and centralizing application
state
State may refer to:
Arts, entertainment, and media Literature
* ''State Magazine'', a monthly magazine published by the U.S. Department of State
* ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States
* ''Our S ...
. It is most commonly used with libraries such as
React REACT or React may refer to:
Science and technology
*REACT (telescope), a telescope at Fenton Hill Observatory, New Mexico, US
Computing
* React (JavaScript library) , a JavaScript library for building user interfaces, from Facebook
** React Nati ...
or
Angular for building
user interface
In the industrial design field of human–computer interaction, a user interface (UI) is the space where interactions between humans and machines occur. The goal of this interaction is to allow effective operation and control of the machine f ...
s. Similar to (and inspired by) Facebook's
Flux architecture
Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. Flux is a concept in applied mathematics and vector calculus which has many applications to physics. For transport ph ...
, it was created by Dan Abramov and Andrew Clark.
Since mid-2016, the primary maintainers are Mark Erikson and Tim Dorr.
Description
Redux is a small library with a simple, limited API designed to be a predictable container for application state. It operates in a similar fashion to a
reducing function, a
functional programming
In computer science, functional programming is a programming paradigm where programs are constructed by Function application, applying and Function composition (computer science), composing Function (computer science), functions. It is a declar ...
concept.
History
Redux was created by Dan Abramov and Andrew Clark in 2015.
Abramov began writing the first Redux implementation while preparing for a conference talk at React Europe on hot reloading. Abramov remarks, "I was trying to make a proof of concept of Flux where I could change the
logic
Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premises ...
. And it would let me time travel. And it would let me reapply the future actions on the code change."
Abramov was struck by the similarity of the Flux pattern with a reducing function. "I was thinking about Flux as a reduce operation over time... your stores, they accumulate state in response to these actions. I was thinking of taking this further. What if your Flux store was not a store but a reducer function?"
Abramov reached out to Andrew Clark (author of the Flux implementation Flummox) as a collaborator. Among other things, he credits Clark with making the Redux ecosystem of tools possible, helping to come up with a coherent
API
An application programming interface (API) is a way for two or more computer programs to communicate with each other. It is a type of software Interface (computing), interface, offering a service to other pieces of software. A document or standa ...
, implementing extension points such as
middleware
Middleware is a type of computer software that provides services to software applications beyond those available from the operating system. It can be described as "software glue".
Middleware makes it easier for software developers to implement co ...
and store enhancers.
By mid 2016, Abramov had joined the React team and passed the primary maintainership on to Mark Erikson and Tim Dorr.
In February 2019,
useReducer was introduced as a
React hook in the 16.8 release. It provides an API that is consistent with Redux, enabling developers to create Redux-like stores that are local to component states.
React v16.8: The One with Hooks
/ref>
See also
* Unidirectional data flow
References
External links
* {{Official website, https://redux.js.org/
GitHub
JavaScript libraries
Computer-related introductions in 2015
Free and open-source software