Performance Testing with Cypress, Lighthouse and k6

Marie Drake

Quality Engineering Manager @ Zoopla

@mcruzdrake | mariedrake.com

Nicole van der Hoeven

Developer Advocate @ k6

@n_vanderhoeven | nicolevdh.com 

Why care for performance?

@mcruzdrake

@n_vanderhoeven

@mcruzdrake

@n_vanderhoeven

@mcruzdrake

@n_vanderhoeven

@mcruzdrake

@n_vanderhoeven

We use technology on a daily basis and have been accustomed to instant gratification.

@mcruzdrake

@n_vanderhoeven

“While customers will forgive and forget the odd bug, crash, or period of site maintenance, they will not tolerate a site that doesn't move at the speed they’ve become accustomed to.”

- Dr. John Bates, CEO, Eggplant from Slow Websites Are Silent Killers for Businesses

@mcruzdrake

@n_vanderhoeven

Performance Testing

Front End/Client Side

Back End/Server Side

@mcruzdrake

@n_vanderhoeven

Google Lighthouse

@mcruzdrake

@n_vanderhoeven

@mcruzdrake

@n_vanderhoeven

Key metrics to know

1. First Contentful Paint

2. Large Contentful Paint

 

3. Speed Index

 

4. Time to Interactive

5. Total Blocking Time

6. Cumulative Layout Shift

@mcruzdrake

@n_vanderhoeven

Ways to run Lighthouse tests

1. Chrome Dev Tools (Lighthouse tab)

2. Browser extension

 

4. Lighthouse CLI

5. cypress-audit plugin

@mcruzdrake

@n_vanderhoeven

@mcruzdrake

@n_vanderhoeven

Time for some live demo! 😱

@mcruzdrake

@n_vanderhoeven

Useful Links

Performance Testing with Cypress, Lighthouse and k6

By Marie Drake

Performance Testing with Cypress, Lighthouse and k6

In this meetup, I'm teaming up with Nicole van der Hoeven to talk all things about Performance Testing! I'll be specifically talking about front end performance testing while Nicole will talk about back end performance testing.

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