Understand the edge
Get clear on origins, cache hits, and how a content delivery network fits into your website.
Explore CDN essentialsContent delivery. Clearly explained.Less distance.
Less distance.
More possibility.
Understand content delivery networks, build a smarter cache, and make every byte work harder. Practical guides for a faster, more resilient web.
Clear explanations Practical checklists Open standards
The delivery pathOrigin → Edge → Visitor
Your originThe source
Edge cacheThe reusable copy
Your visitorThe experience
# Example: a cacheable public image
Content-Type: image/webp
Cache-Control: public, max-age=86400
Vary: Accept-Encoding
One reusable file. Less repeat work.
Content-Type: image/webp
Cache-Control: public, max-age=86400
Vary: Accept-Encoding
One reusable file. Less repeat work.
ILLUSTRATIVE DELIVERY FLOW01 / CDN ESSENTIALS
Content delivery networksEdge cachingWeb performanceOrigin security
Build on the right foundationsA better path from
A better path from
origin to everyone.
The right delivery decisions start with understanding the moving parts. Take them one useful idea at a time.
Make performance practical
Connect caching, lighter images, and delivery choices to what visitors actually experience.
Build a faster experienceKeep protection in perspective
Learn how HTTPS, origin access, and traffic filtering work together at the network edge.
Explore edge securityFrom theory to your websiteBetter delivery.
Better delivery.
By design.
No single setting makes a fast website. Build a repeatable process around what your visitors need.
Use the CDN testing checklist01
Start with your visitors
Look at audience locations, page types, and the requests that matter. A useful plan begins with a real workload.
02
Choose what stays in cache
Separate reusable public files from personalized content. Match freshness rules to how the site is published.
03
Measure, then improve
Compare the same pages and conditions before and after a change. Keep browser performance and delivery performance in view.
The Edge JournalSmall details.
Explore all 10 guidesSmall details.
Big differences.
What Is a CDN? A Practical Guide to Content Delivery
Follow a request from browser to edge and origin, then learn which content is safe to cache and what to verify before expanding CDN coverage.
CDN Caching and Cache-Control: A Practical Guide
Build safer cache policies with clear freshness windows, accurate validators, predictable cache keys, and practical checks for private responses.
Image Optimization with a CDN: A Practical Delivery Guide
Create a reliable image delivery workflow with responsive sources, intentional loading priority, visual quality checks, and predictable caching.
Built around your stackA different site.
A different site.
A considered setup.
The fundamentals stay the same. Your content, publishing process, and personalisation determine the details.
Cache the public.
Respect the personal.
Bring images and assets closer to readers while keeping administration, checkout, and account pages out of shared caches.
Read the WordPress & CMS guideSimple files.
Smarter delivery.
Make HTML freshness, versioned assets, and a reliable release process work together for a straightforward static deployment.
Explore static website deliveryA few good questionsClear answers.
Clear answers.
A stronger start.
New to content delivery? These are useful places to begin.
What is a content delivery network?
A content delivery network (CDN) is a distributed layer that delivers content between your origin and your visitors. A cached public file can be reused at an edge location, reducing repeat work at the origin. Read the CDN introduction.
Does a CDN replace my web hosting?
An origin still has to store or generate the content. Some platforms bundle hosting and delivery, but the roles remain useful to distinguish. Compare a CDN with web hosting.
Can a CDN make every page faster?
Results depend on the workload, cache settings, visitor network, and browser work. A CDN can help with delivery, but it does not remove oversized JavaScript or fix every layout problem. See where Core Web Vitals fit.
Can I use a CDN with WordPress or a static site?
Both can benefit from thoughtful delivery settings. WordPress requires special care around logins, carts, and other personalized pages. Static sites need a clear publishing and asset-versioning policy. Explore WordPress and CMS guidance.
Where should I begin?
Start with the CDN essentials, then use the testing checklist to document your baseline. If you already understand the basics, the caching guides make a practical next step. Open the CDN testing checklist.