use React

[00:00] Okay, so we're just deleting all of this stuff and now use is going to come straight from react that did on and The app still works. Hooray That was it But I think it that it's really instructive to build your own version of a thing to really understand that thing even if your version

[00:18] Is not as robust and it's missing features or whatever just really helps you understand how that thing works And so we built our own version of use and by switching for the react version of use We made sure that we are using it correctly. So awesome work on this You built the use hook from react sort of good job

[00:00] Alright so this exercise is barely an exercise. We're just going to switch our own utility for the use hook in React and just make sure that things are still working. Good luck!

Suspense is key to managing async operations declaratively in React. 

It allows you to handle loading states, errors, and other async dependencies more smoothly by rendering a fallback while a promise is pending. 

In this workshop, you'll learn how to:

- Manage loading and errors with Suspense
- Cache promises and use the `useTransition` hook
- Update UI optimistically with `useOptimistic`
- Load images asynchronously with suspense 
- Keep UI responsive with `useDeferredValue`
- Optimize and avoid network waterfalls

Once you're through this workshop you'll have a solid handle on Suspense, which will really improve the UX of your apps and open doors to more advanced patterns in later workshops. 

## Data Fetching

No matter how fast your server is, you need to think about what the user's looking at while they wait. You also need to think about what happens if the request fails.

In this section you'll learn how to manage both of these declaratively in components using `Suspense` and `ErrorBoundary`.

## Dynamic Promises


Here you'll learn how to cache your promises in order to avoid unnecessary re-fetching. 

You'll also learn about transitions and how to make the transition from loading to resolved state smoother using the useTransition hook.


## Optimistic UI

The idea of "Optimistic UI" is based on the belief that most of the time the things your users do will be successful.

In this section you'll discover the useOptimistic hook, which is like useState that actually changes the UI even while it's suspended. 

## Suspense img

Anything async can be suspended, including images! 

This technique involves loading images with promises and using the browser’s native caching system. 

By combining async image loading with Suspense boundaries, you can control rendering fallbacks and ensure images are fully loaded before displaying updated content, avoiding stale UI states

## Responsive

You can run into some problems when using useTransition. For example, if the user is typing in a search box which you're controlling with state, you want to keep the `<input />`'s value up-to-date with what they're typing, not with the previous state while React is waiting for the transition to complete.

So in this section you'll learn how to use the useDeferredValue hook to  display some pending state while also allowing us to display the state that triggered a component to suspend.

## Optimizations

This section is about how to go chasing waterfalls.

Due to the design of Suspense, you can easily create network waterfalls by mistake. 

So what you're really be learning is how to deal with this both on the frontend and the backend. On the front you'll figure out how to trigger requests before use is called. And on the back you'll set cache headers on your responses to tell the client how to cache properly.

Learn how Suspense works under the hood, preparing you for the future of asynchronous state management.

React Suspense

Kent C. Dodds

React Fundamentals

React Hooks

Advanced React APIs

Advanced React Patterns

React Performance

React Server Components

Interviews With Experts

Epic React Pro

React Suspense Intro

Intro to Data fetching

Throwing Promises

Error Handling

Formal Status

Utility

Dad Joke Break Data fetching

Data fetching

Intro to Dynamic Promises

Promise Cache

useTransition

Pending Flash

Dad Joke Break Dynamic Promises

Dynamic Promises

Intro to Optimistic UI

Optimistic UI

Form Status

Multi-step Actions

Dad Joke Break Optimistic UI

Intro to Suspense img

Img Component

Img Error Boundary

Key prop

Dad Joke Break Suspense img

Suspense img

Intro to Responsive

useDeferredValue

Dad Joke Break Responsive

Responsive

Intro to Optimizations

Parallel Loading

Server Cache

Dad Joke Break Optimizations

Optimizations

Outro to React Suspense 

React Suspense

React Suspense

Transcript

use React

Transcript