After you make a fast web site, keep it fast by measuring it over time. Read Use Speedlify to Continuously Measure Site Performance. Created by @zachleat.
- Requires Node 12+
- Each file in
_data/sites/*.jsis a category and contains a list of sites for comparison.
npm install
npm run test-pages
npm run start
Go to one of the JavaScript files in _data/sites and modify the urls field.
You'll need a login and be added to the Netlify team account. There you see trigger a production deploy or monitor failed deploys. Current folks with access:
- Lou Moore
- Colt Borg
This repo has a GitHub Action that automatically re-deploy the site with new data every Monday and Friday morning.
Can run directly on Netlify (including your tests) and will save the results to a Netlify build cache (via Netlify Build Plugins, see plugins/keep-data-cache/).
Speedlify will also save your data to /results.zip so that you can download later. Though this has proved to be unnecessary so far, it does serve as a fallback backup mechanism in case the Netlify cache is lost. Just look up your previous build URL and download the data to restore.
- If you change a URL to remove a redirect (to remove or add a
www., moved domains, etc), you probably want to delete the old URL’s data otherwise you’ll have two entries in the results list. - When running on Netlify, a single category has a max limit on the number of sites it can test, upper bound on how many tests it can complete in the 15 minute Netlify build limit.
- The same URL cannot be listed in two different categories (yet).