Serving from closer.
WHAT IT DOES
Serves your files from servers closer to each visitor.
WHY THAT HELPS
Latency falls with distance.
A visitor far from your server waits less for each resource.
WHAT ELSE IT PROVIDES
Reduced load on your own server Absorption of traffic spikes Filtering of malicious requests, on many services
WHAT IT DOES NOT FIX
A slow application A slow database Badly optimised pages
THAT POINT MATTERS
A delivery network accelerates delivery, not generation.
WHAT IT SUITS
Sites with visitors spread widely Sites with substantial static content
WHAT TO BE CAREFUL WITH
Caching rules that serve stale content Logged-in areas that must not be cached Certificate configuration
WHAT TO TEST AFTER ENABLING ONE
That the site loads correctly That changes appear after purging That forms and checkout work
WHAT TO REMEMBER
You must purge its cache after changes.
