Make the origin efficient before relying on edge caching
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Step-by-step
Measure first
Use browser developer tools and performance reports to identify slow HTML, images, fonts, or scripts.
Resize images
Do not serve multi-megabyte originals when the layout displays a much smaller image.
Limit plugins
Every plugin adds code, hooks, database queries, or assets. Keep only what the site needs.
Cache carefully
Cache static assets aggressively, but avoid caching authenticated admin responses or personalized pages incorrectly.
Keep PHP and database healthy
Use a supported PHP version, monitor slow queries, and avoid repeatedly scheduled plugin tasks that pile up.
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Troubleshooting
If a command or screen differs from the lesson, stop and verify the version you are using before forcing a change.
What you learned
You now understand the purpose of this part of the system and have a concrete result you can verify before continuing to the next lesson.