Glossary
Every term the courses use, defined in one line and then in a paragraph. Written to be read out of order.
Showing 2 of 2 matching “CDN”
A kept copy of something expensive to produce.
A stored result reused instead of being recomputed or refetched. The most effective performance tool available and the source of the most confusing bugs, because a copy can be out of date. Copies live in the browser, the CDN, and your server.
See also CDN, Invalidation, TTL
Copies of your files in many places worldwide.
A content delivery network keeps copies of static files at locations around the world so users are served from somewhere near them. Cheap, effective, and a place stale content loves to hide.