# Web applications

**URL:** <https://forum.freecodecamp.org/t/web-applications/441811>\
**Category:** Curriculum Help\
**Tags:** javascript\
**Created:** [January 21, 2021, 4:24am UTC](https://forum.freecodecamp.org/t/web-applications/441811 "2021-01-21T04:24:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![eralpkor](https://sea3.discourse-cdn.com/freecodecamp/user_avatar/forum.freecodecamp.org/eralpkor/32/10456_2.png) [@eralpkor](https://forum.freecodecamp.org/u/eralpkor)\
**Post date:** [January 21, 2021, 4:24am UTC](https://forum.freecodecamp.org/t/web-applications/441811/1 "2021-01-21T04:24:57Z")

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**Building a web application is very stateful. Where should this state be stored? Where should it not be stored?**

This was a question on a test I took. It did not say `React` specific. Do they mean `sessions` and `cookies` ?

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**Author:** ![bedward](https://avatars.discourse-cdn.com/v4/letter/b/f4b2a3/32.png) [@bedward](https://forum.freecodecamp.org/u/bedward)\
**Post date:** [January 21, 2021, 4:29am UTC](https://forum.freecodecamp.org/t/web-applications/441811/2 "2021-01-21T04:29:06Z")

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Redux is an open-source JavaScript library for managing application state. It is most commonly used with libraries such as React or Angular for building user interfaces. Similar to Facebook’s Flux architecture, it was created by Dan Abramov and Andrew Clark. [Wikipedia](https://en.wikipedia.org/wiki/Redux_(JavaScript_library))

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**Author:** ![nibble](https://sea3.discourse-cdn.com/freecodecamp/user_avatar/forum.freecodecamp.org/nibble/32/123681_2.png) [@nibble](https://forum.freecodecamp.org/u/nibble)\
**Post date:** [January 21, 2021, 4:31am UTC](https://forum.freecodecamp.org/t/web-applications/441811/3 "2021-01-21T04:31:51Z")

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Hello @eralpkor

I think the react documentation’s thinking in react section might be useful especially the section which explains where your state should live.

> **[Thinking in React – React](https://reactjs.org/docs/thinking-in-react.html#step-4-identify-where-your-state-should-live)**
>
> A JavaScript library for building user interfaces

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**Author:** ![system](https://global.discourse-cdn.com/freecodecamp/original/3X/e/1/e1c433102e34b46dfaa3e15d13ab9a514b127078.svg) [@system](https://forum.freecodecamp.org/u/system)\
**Post date:** [July 22, 2021, 4:32pm UTC](https://forum.freecodecamp.org/t/web-applications/441811/4 "2021-07-22T16:32:02Z")

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