Ask us about:
- Recompose Library
- Working at Facebook
Hi Andrew! Glad that you are doing an AMA here. :)
What was the initial motivation behind building Redux? What were state management problems you faced that led to Redux.
How would you recommend to learn Redux for someone who has small amount of experience in Functional Programming?
I comfortable with React and now I want to use Redux with it, because approach I currently apply uses events to notify React components when my models have changed, kinda like Pub/Sub bus. What I've noticed this approach doesn't scale very well and it's hard to reason about code when code base becomes bigger. I've read few articles about Redux and I think it can help me.
I have a lot of experience with OOP code. I worked with Ruby/Rails and focused a lot on good object oriented design.
I don't have a lot of experience with functional programming in general. I have some experience with Scheme, mostly for learning recursion.
I kinda understand lambda calculus and ideas behind it, I even wrote Applicative Y-Combinator using things like Tennent's Correspondence Principle and so on.
Also I have some experience with Haskell. I know what "Currying" and "Partially applied function" concepts mean and what they for.
For me it looks like that Redux is heavily based on ideas from Functional Programming.
I think my question consists from 2 parts:
What learning path would you recommend in order to be comfortable with ideas on which Redux based on?
What knowledge/skills should I have in order to be really comfortable working with Redux and build applications using it?
I know I wrote a lot here, but I think it will help you give me more specific advice using provided information.
If you thinking that there is some programming language where some particular ideas expressed better, feel free to mention it. I've found that sometimes it's very beneficial to get to roots of some idea (yes, I do have a lot of free time). For example learning Smalltalk made me a better Ruby developer and OO developer in general.
Thank you a lot for any suggestion/advice :-)
When did you start realising that Redux was gaining popularity, and being used in production level apps? What were your feelings? What would be your advice for an open source aspirant?
Redux API is pretty much stable right now - I was wondering:
- Is there is anything left to improve or add to Redux?
- Can we except some new features in the future?
- What do you think will be next thing after Redux (for state/app management)?
Hi Andrew, You've got hired by Facebook just recently, Congratz! What are your responsibilities and how is Redux affected if its affected at all.
Redux is great and has given a new vocabulary for talking about things that is very functional and great. But middleware is an anomaly.
The idea that you can dispatch an action that will asynchronously dispatch other actions is very simple - but it muddles the idea of what an action is. It also confounds the search for what interleaving semantics are applied - for example - after I dispatch actions A and B, the store may recieve [B A' A'']
I find that it's best if Actions are thought of as items that are sequentially reduced into the store, and if a higher level streams library such as RxJS is in charge of interleaving streams with whatever semantics the application needs.
I think Redux is great in its core focus, but RxJS is great at controlling the behavior of an aggregation of streams, and is more flexible than middleware, so I recommend keeping asynchrony out of actions.
But I'm glad so many people have found their own particular ways of using it. And I love how it pushes the few modules of my system that are not pure functions out to the periphery.
Thanks for the detailed answer to my last question! Do you think complex apps can be built without a state management solution like Redux?
Are you excited by the advancements in GraphQL, Relay. Do you think Relay would replace Redux in the future, or would it still hold its ground? What are your thoughts?
I'm going to start using Redux with React and in the process I want to understand how React/Redux and ideas from functional programming fit together.
Would it be better to work with Elm first and then after I've understand big picture shifted back to React/Redux?
In your opinion, what's the best way to get started with real world app development in React/Redux?
Hi Dan, you often say that the Redux is inspired by a few core ideas in Elm; could you give a brief on what parts of Redux were inspired by Elm?
In terms of Routing, what do you recommend? Many developers while getting started with React/Redux tend to use react-router. What routing solution do you use in your own projects?
Is it okay to have component wise state when using Redux as a store management? Have you guys come across any cases when there is a need for this?
Hi Andrew, I've a couple of questions for you.
What was your role in building Redux; what improvements have you pushed to the library, apart from Dan Abramov's.
What is your role at Facebook, and what sort of work do you do?
Have you got around to playing with state management JS libraries other than Redux? How would you say they fare against Redux, or better what are a couple of things that a state management library other than Redux does better than Redux; and what are a couple of things that Redux does better than the counterparts?
Hey Andrew and Dan!
I was wondering what the relationship between ImmutableJS and React/Flux is like at facebook since they are both developed in house. I feel like ImmutableJS is a little overused sometimes but I was wondering to get some insight into how it is used at facebook and when you think it is appropriate for a Flux or Redux app
Hi Dan, I started learning ReactJS and now feel comfortable with the library. I know meteor fundamentals too. But I am facing a wall trying to create event based transitions from one component to another in SPA. Is redux the answer ? I know nothing about it yet. If yes, what are the best resources to learn?
Hi, can I learn React after Redux?
Fancy to see you here. Here's a question apart from Redux. What is your work like in the React core team?
What are some of the most unique and interesting redux middleware you've seen?
Hi Andrew and Dan :)
First, thanks for your awesome works !
What's the coolest thing you've made with redux ?
I used Redux a bit about a year ago and haven't looked at it again until very recently. I'm wondering if there are any Redux specific tools/middleware in the ecosystem that you see others commonly using together? Any that you don't mind endorsing?
I remember using reselect, redux-logger, and redux-thunk..
I have two fundamental questions:
 What is your favourite approach for managing routing - do you recommend coupling routing with the layout similar to ember router or react-router or would you recommend for a minimal router that just intercepts history change and updates the state tree and lets the components handle the rest of the logic.
The context is a portal like application having routes in the order of a hundred.
 Do you have any high level recommendations for structuring the state tree ? While it is understandable that it should be as normalized as possible, I am more concerned about information that denotes the current state of the application. Does it make sense to have a subtree that identifies what is currently relevant to the application ?
How would you answer when someone asks whether to use Redux or a bare minimum Flux implementation?
Hi folks !
I'm building my first App with React+Redux and I fear I'm doing an anti-pattern. I use a middleware to perform my network requests (something like this https://github.com/agraboso/redux-api-middleware). So whenever I need to perform a request, I have to dispatch an action. Thus, I feel like my actions become just like regular functions, I may dispatch them even if I don't really need to update the state. Does this look like an anti-pattern, or does dispatching actions for basically any tasks make sense ?
Thanks ! :)