CDN Architecture Diagram
Map edge servers, origin, caching and DNS routing in a content delivery network.
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What's in this template
7 connected components you can rename, recolor, and extend with AI.
A CDN architecture diagram shows how a content delivery network speeds up websites by caching content at edge locations close to users. DNS or anycast routing directs each request to the nearest edge server, which serves cached assets or fetches them from the origin on a cache miss. Edge caching, origin shielding, TLS termination and a web application firewall round out the path from user to content.
Frontend engineers, DevOps teams and architects use this diagram to explain latency reduction, cache invalidation and origin offload. It is ideal for documenting how static assets, media and even dynamic content are delivered globally, and how the edge layer both protects and accelerates the origin server.
Great for
- Performance optimization docs
- Infrastructure reviews
- Latency troubleshooting
- DevOps onboarding
- Vendor comparison
Make your own version with AI
Prefer to start from your own content? Describe it in one sentence and Infogiph generates a cdn architecture diagram you can edit and animate. For example:
“CDN Architecture Diagram showing End Users, DNS / Anycast Routing, Edge Cache, Origin Server, Origin Shield and Web Application Firewall”
Try it in the AI diagram generator, or read Best AI diagram generators compared.
How to customize this template
- Open it in the canvas with Use this template.
- Put the component every request passes through, such as the gateway, broker or load balancer, in the center node, since every other node connects to it.
- Write the protocol into the label, for example Orders Service (gRPC) or Billing Events (async), so readers can tell calls from events.
- Swap generic icons for real vendor logos with the icon search, so the diagram matches the stack your team actually runs.
- Mark what you do not operate, such as third-party APIs, the CDN or a managed database, by adding (external) or (managed) to its label.
- Export a PNG or SVG for docs and slides, or a GIF or MP4 to keep the animation.
Frequently asked questions
What is a CDN architecture?+
A CDN architecture is a network of geographically distributed edge servers that cache content close to users, reducing latency and offloading traffic from the origin server.
How does a CDN work?+
DNS or anycast routing sends each request to the nearest edge server. If the content is cached there it is served instantly; otherwise the edge fetches it from the origin and caches it for next time.
What is the origin server in a CDN?+
The origin is the authoritative source where your real content lives. Edge servers pull from it on cache misses, and an origin shield can reduce how often that happens.
What can a CDN cache?+
CDNs cache static assets like images, CSS, JavaScript and video, and modern CDNs can also cache and accelerate dynamic and API responses at the edge.
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