Practical Single Page Applications with Server Side Rendering using Next.js
 

https://github.com/mattruby/OSN-2019-NextJS

Why are we here?

SPA, SSR, Next.js...

Who cares?

I want a fast site

I want a discoverable site

(SEO)

I want a productive development experience

Multi vs Single Page Applications

Multi Page Application

/index.jsp

/product.jsp?id=1234

Multi Page Application

Multi Page Application

  • Full page reloads
  • Puts stress on the web server
  • Caching output HTML can be a challenge 

Pros

  • Ease of development
  • Excellent discoverability (SEO) 
  • Simple analytics
  • High speed page render

Cons

Single Page Application

/index.html

/product?id=1234

Single Page Application (SPA)

Single Page Application (SPA)

  • Discoverability (SEO) is generally poor
  • Initial resource load may be heavy 
  • 3rd party integrations
  • UX perception (is the page loading?)
  • Memory leaks can add up!

Pros

  • One initial load for most resources
  • Scalability
  • UX perception
  • Less bandwidth usage

Cons

Next.js Application (SPA + SSR)

SPA and SSR all rolled into one platform

React code is running on both server and client side

Next.js attempts to replicate the development experience of simple MPAs

Getting started

yarn add next react react-dom
{
  ...
  "scripts": {
    "dev": "next",
    "build": "next build",
    "start": "next start"
  }
  ...
}
yarn dev

Create your pages

/root
    /pages
        helloWorld.jsx
        (Put your "page" files here)
export default () => <h1>Hello Next.js</h1>;

helloWorld.jsx

Key points

Routing

Data loading

User experience

https://github.com/mattruby/OSN-2019-NextJS

Routing 101

<Link>

Demo Links

Loading Data 101

getInitialProps

Sample endpoint

http://localhost:5005/products

isomorphic-unfetch

Switches between unfetch & node-fetch for client & server.

Demo

Link & getInitalProps

Search > Results > Details

Demo

Slug it out!

xyz.com/product/smelly_cheese/?id=10

Demo

Son of "Slug it out"

Now with working SSR!

Demo

Slow it down...

Let's get real(ish)

Demo

What are we waiting for?

What are we missing

Wait for it...

We need a loading state!

Demo

To wait or not to await?

When and why is the question

Too fast

Buffer loading indicator for almost fast responses

If the loading indicator is shown,

show it for a minimum amount of time

Buffer load for fast responses

Wait 200ms for the data to load

before displaying the loading indicator

Demo

So much more!

  • AMP

  • Dynamic import

  • Static exports

  • CSS in JS

  • Lambda per page deployments

  • next-offline PWA

Thanks for joining me!

@ruby_matt

mattruby@gmail.com

Practical SPAs with next.js

By Matt Ruby

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Practical SPAs with next.js

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