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CDN Technology Overview

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Questions and Answers

What is the primary function of Edge servers within Points of Presence (PoPs) in a CDN?

To provide DDoS protection for CDNs

To distribute content across multiple PoPs

To act as origin servers for content

To act as reverse proxies with content caches (correct)

What is the primary purpose of deploying servers at hundreds of locations worldwide in a CDN?

To provide DDoS protection for CDNs

To bring content closer to users for faster delivery (correct)

To distribute content across multiple PoPs

To act as origin servers for content

What is the benefit of CDNs in terms of security?

Reducing load on origin servers

Improving content caching

Providing effective DDoS protection (correct)

Distributing content across multiple PoPs

What is the purpose of technologies like DNS-based routing and Anycast in CDNs?

<p>To direct user requests to the closest PoP for faster content delivery</p> Signup and view all the answers

What is the primary benefit of using CDNs in terms of performance?

<p>Speeding up the delivery of static HTML content globally</p> Signup and view all the answers

Study Notes

CDN, or content delivery network, was developed in the late 90s to speed up the delivery of static HTML content globally.
CDNs bring content closer to users by deploying servers at hundreds of locations worldwide called Points of Presence (PoPs).
Different CDNs use technologies like DNS-based routing and Anycast to direct user requests to the closest PoP for faster content delivery.
Edge servers within PoPs act as reverse proxies with content caches, reducing load on origin servers by serving cached content.
Modern CDNs not only improve performance but also enhance security by providing effective DDoS protection and increase availability by distributing content across multiple PoPs.

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Description

Explore the technology behind Content Delivery Networks (CDN) and how they speed up global content delivery. Learn about Points of Presence (PoPs), DNS-based routing, Anycast, reverse proxies, content caching, DDoS protection, and multi-PoP distribution.