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infrastructure/networking/cdn-setup/SKILL.md

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+---
+name: cdn-setup
+description: Configure CDNs for content delivery. Set up CloudFront, Cloudflare, and Fastly. Use when optimizing global content delivery.
+license: MIT
+metadata:
+  author: devops-skills
+  version: "1.0"
+---
+
+# CDN Setup
+
+Configure content delivery networks.
+
+## AWS CloudFront
+
+```bash
+aws cloudfront create-distribution --distribution-config '{
+  "CallerReference": "my-distribution",
+  "Origins": {
+    "Quantity": 1,
+    "Items": [{
+      "Id": "myS3Origin",
+      "DomainName": "mybucket.s3.amazonaws.com",
+      "S3OriginConfig": {"OriginAccessIdentity": ""}
+    }]
+  },
+  "DefaultCacheBehavior": {
+    "TargetOriginId": "myS3Origin",
+    "ViewerProtocolPolicy": "redirect-to-https",
+    "CachePolicyId": "658327ea-f89d-4fab-a63d-7e88639e58f6"
+  },
+  "Enabled": true
+}'
+```
+
+## Cloudflare
+
+```bash
+# Via API
+curl -X POST "https://api.cloudflare.com/client/v4/zones" \
+  -H "Authorization: Bearer $TOKEN" \
+  -d '{"name":"example.com","jump_start":true}'
+```
+
+## Cache Headers
+
+```nginx
+location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ {
+    expires 30d;
+    add_header Cache-Control "public, immutable";
+}
+```
+
+## Best Practices
+
+- Set appropriate cache headers
+- Use cache invalidation sparingly
+- Implement cache warming
+- Monitor cache hit ratios