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Cloud CDN (Content Delivery Network) accelerates content delivery by caching your content at Google's globally distributed edge points of presence (PoPs). It works seamlessly with the External HTTP(S) Load Balancer to reduce latency, lower origin load, and improve user experience for web applications and APIs.
Cloud CDN is a globally distributed caching layer that sits in front of your backends. When a user requests content, Cloud CDN checks if a cached copy exists at the nearest edge PoP. If it does (a cache hit), the content is served directly from the edge — no round trip to your origin. If not (a cache miss), the request is forwarded to your backend, and the response is cached for future requests.
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