Performance: Fast First Load and 3G Considerations

Scott and Wes dive into the ins and outs, best practices and tasty tidbits of Progressive Web Apps.

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Show Notes

2:00

• What’s the deal with the GitHub / Microsoft acquisition?

6:05

• What is a Progressive Web App?

8:55 - Progressive Web App Checklist

What are the baseline features for a Progressive Web App?

09:25

• Site is served over HTTPS
• Let’s Encrypt

11:05

• Pages are responsive on tablets & mobile devices

11:35

• All app URLs load while offline
• Use a Service Worker

16:35

• Metadata provided for Add to Home screen

18:40

• First load fast even on 3G

20:00

• Site works cross-browser

20:15

• Page transitions don’t feel like they block on the network

22:20

• Each page has a URL

What makes an exemplary Progressive Web App?

27:42

• All content is indexed by Google

28:38

• Schema.org metadata is provided where appropriate
• Social metadata is provided where appropriate

29:42

• Canonical URLs are provided when necessary

User experience

31:43

• Content doesn’t jump as the page loads
• Scott’s Pro Gatsby Course

36:52

• Pressing back from a detail page retains scroll position on the previous list page

37:34

• When tapped, inputs aren’t obscured by the on screen keyboard

The Best of the rest

38:22

• Content is easily shareable
• Site is responsive
• Any app install prompts are not used excessively
• The Add to Home Screen prompt is intercepted

39:20

• Use cache-first networking

Device APIs

40:34

• Web RTC
• Get User Media

41:50

• Push API

45:12

• Accelerometer
• GPS

45:55

• Payment Request API

47:12

• Local Storage

48:03

• IndexedDB

48:35

• StorageManager

51:45

• Vibration API

52:58

• Use Lighthouse to improve the quality of your web apps

××× SIIIIICK ××× PIIIICKS ×××

• Scott: myNoise
• Wes: Ozark Trail Drinkware

Shameless Plugs

• Scott’s Level 2 React Course
• Wes’ Courses

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