---
title: Content Delivery Network Blog  | Learn - CDN Fundamentals (2)
description: Learn - CDN Fundamentals | CDN Blog | About Content Delivery Network  (2)
image: https://blog.blazingcdn.com/hubfs/logo%20560-560-1.png
---

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# Content Delivery Network Blog | Learn - CDN Fundamentals (2) | About Content Delivery Network

Learn - CDN Fundamentals | CDN Blog | About Content Delivery Network (2)

[All](https://blog.blazingcdn.com/en-us) [Learn](https://blog.blazingcdn.com/en-us/tag/learn) [Learn - CDN Fundamentals](https://blog.blazingcdn.com/en-us/tag/learn-cdn-fundamentals) [Compare](https://blog.blazingcdn.com/en-us/tag/compare) [Video - Video & Streaming](https://blog.blazingcdn.com/en-us/tag/video-video-streaming) [Learn - Advanced Concepts](https://blog.blazingcdn.com/en-us/tag/learn-advanced-concepts) [Pricing - Cost Optimization](https://blog.blazingcdn.com/en-us/tag/pricing-cost-optimization) [Mobile Apps & Developers](https://blog.blazingcdn.com/en-us/tag/mobile-apps-developers) [Pricing - Pricing & Costs](https://blog.blazingcdn.com/en-us/tag/pricing-pricing-costs) [Benchmarks](https://blog.blazingcdn.com/en-us/tag/benchmarks) [Video - Live Streaming](https://blog.blazingcdn.com/en-us/tag/video-live-streaming) [Software & SaaS](https://blog.blazingcdn.com/en-us/tag/software-saas) [Pricing - Provider Pricing](https://blog.blazingcdn.com/en-us/tag/pricing-provider-pricing) [Media & Broadcasting](https://blog.blazingcdn.com/en-us/tag/media-broadcasting) [Compare - Provider Comparisons](https://blog.blazingcdn.com/en-us/tag/compare-provider-comparisons) [Industries](https://blog.blazingcdn.com/en-us/tag/industries) [DevOps & Cloud Infra](https://blog.blazingcdn.com/en-us/tag/devops-cloud-infra) [Gaming & Esports](https://blog.blazingcdn.com/en-us/tag/gaming-esports) [Pricing - Decision Support](https://blog.blazingcdn.com/en-us/tag/pricing-decision-support) [Tools](https://blog.blazingcdn.com/en-us/tag/tools) [Enterprise & Corporate](https://blog.blazingcdn.com/en-us/tag/enterprise-corporate) [AI & Machine Learning](https://blog.blazingcdn.com/en-us/tag/ai-machine-learning) [Security](https://blog.blazingcdn.com/en-us/tag/security) [Video - VOD & OTT](https://blog.blazingcdn.com/en-us/tag/video-vod-ott) [Learn - By Content Type](https://blog.blazingcdn.com/en-us/tag/learn-by-content-type) [Security - Encryption & Access](https://blog.blazingcdn.com/en-us/tag/security-encryption-access) [Video - Bandwidth & Costs](https://blog.blazingcdn.com/en-us/tag/video-bandwidth-costs) [Security - Attack Protection](https://blog.blazingcdn.com/en-us/tag/security-attack-protection) [E-Learning & EdTech](https://blog.blazingcdn.com/en-us/tag/e-learning-edtech) [Security - Video & DRM Security](https://blog.blazingcdn.com/en-us/tag/security-video-drm-security) [Compare - Ratings & Benchmarks](https://blog.blazingcdn.com/en-us/tag/compare-ratings-benchmarks) [Compare - Strategy Comparisons](https://blog.blazingcdn.com/en-us/tag/compare-strategy-comparisons) [Sports & Live Events](https://blog.blazingcdn.com/en-us/tag/sports-live-events) [AdTech & Advertising](https://blog.blazingcdn.com/en-us/tag/adtech-advertising) [Case Studies](https://blog.blazingcdn.com/en-us/tag/case-studies) [Learn - Glossary](https://blog.blazingcdn.com/en-us/tag/learn-glossary)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-28-2026-07-00-34-3125-AM.jpeg)](https://blog.blazingcdn.com/en-us/cloudflare-vercel-workflow-deploying-nextjs-edge-caching)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Cloudflare in Front of Vercel: Next.js Caching Setup and Trade-offs](https://blog.blazingcdn.com/en-us/cloudflare-vercel-workflow-deploying-nextjs-edge-caching)

 Next.js Cloudflare CDN in Front of Vercel: 2026 Caching Playbook Here is the failure pattern we see most often. A route ...

 BlazingCDN ·  Sep 28, 2026, 9:02:41 AM 

[Read more](https://blog.blazingcdn.com/en-us/cloudflare-vercel-workflow-deploying-nextjs-edge-caching)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-27-2026-07-30-21-1808-AM.jpeg)](https://blog.blazingcdn.com/en-us/what-is-srt-secure-reliable-transport-for-live-video)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [What Is SRT? Secure Reliable Transport for Live Video](https://blog.blazingcdn.com/en-us/what-is-srt-secure-reliable-transport-for-live-video)

 SRT (Secure Reliable Transport) is an open-source, UDP-based protocol for moving live video across unpredictable ...

 BlazingCDN ·  Sep 27, 2026, 9:31:34 AM 

[Read more](https://blog.blazingcdn.com/en-us/what-is-srt-secure-reliable-transport-for-live-video)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-26-2026-07-00-27-9592-AM.jpeg)](https://blog.blazingcdn.com/en-us/what-are-cdn-nodes-and-points-of-presence-pops)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [What Is a PoP? CDN Nodes, Edge Servers and Points of Presence](https://blog.blazingcdn.com/en-us/what-are-cdn-nodes-and-points-of-presence-pops)

 What Is a PoP? CDN Nodes, Edge Servers and Points of Presence A CDN PoP 40 km from your users can lose to one 400 km ...

 BlazingCDN ·  Sep 26, 2026, 9:02:02 AM 

[Read more](https://blog.blazingcdn.com/en-us/what-are-cdn-nodes-and-points-of-presence-pops)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-24-2026-07-30-24-1334-AM.jpeg)](https://blog.blazingcdn.com/en-us/image-delivery-at-the-edge-webp-avif-and-responsive-sizes)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Image Delivery at the Edge: WebP, AVIF and Responsive Sizes](https://blog.blazingcdn.com/en-us/image-delivery-at-the-edge-webp-avif-and-responsive-sizes)

 An image CDN should serve AVIF to the roughly 93–95% of browsers that decode it as of 2026, WebP to most of the rest, ...

 BlazingCDN ·  Sep 24, 2026, 9:31:53 AM 

[Read more](https://blog.blazingcdn.com/en-us/image-delivery-at-the-edge-webp-avif-and-responsive-sizes)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-23-2026-07-30-26-9133-AM.jpeg)](https://blog.blazingcdn.com/en-us/cdn-cache-key-design-query-strings-cookies-and-hit-ratio)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [CDN Cache Key Design: Query Strings, Cookies and Hit Ratio](https://blog.blazingcdn.com/en-us/cdn-cache-key-design-query-strings-cookies-and-hit-ratio)

 A CDN cache key is the tuple the edge hashes to decide hit or miss, and on most platforms the default is scheme, host, ...

 BlazingCDN ·  Sep 23, 2026, 9:32:52 AM 

[Read more](https://blog.blazingcdn.com/en-us/cdn-cache-key-design-query-strings-cookies-and-hit-ratio)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-23-2026-07-00-37-8574-AM.jpeg)](https://blog.blazingcdn.com/en-us/cdn-netflix-tech-stack-open-connect-home-caching-nodes)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Netflix CDN Explained: How Open Connect and ISP Caches Work](https://blog.blazingcdn.com/en-us/cdn-netflix-tech-stack-open-connect-home-caching-nodes)

 Netflix CDN Explained: Open Connect and ISP Caches 2026 The Netflix CDN moves the overwhelming majority of its bytes ...

 BlazingCDN ·  Sep 23, 2026, 9:02:33 AM 

[Read more](https://blog.blazingcdn.com/en-us/cdn-netflix-tech-stack-open-connect-home-caching-nodes)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-22-2026-07-00-41-8479-AM.jpeg)](https://blog.blazingcdn.com/en-us/cdn-stands-for-content-delivery-network-history-and-evolution)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [What Is a Content Delivery Network (CDN)? How It Works](https://blog.blazingcdn.com/en-us/cdn-stands-for-content-delivery-network-history-and-evolution)

 What Is a Content Delivery Network (CDN)? How It Works in 2026 A content delivery network is a distributed set of edge ...

 BlazingCDN ·  Sep 22, 2026, 9:02:25 AM 

[Read more](https://blog.blazingcdn.com/en-us/cdn-stands-for-content-delivery-network-history-and-evolution)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-20-2026-07-30-23-3710-AM.jpeg)](https://blog.blazingcdn.com/en-us/anycast-vs-dns-routing-how-a-cdn-picks-the-pop)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Anycast vs DNS Routing: How a CDN Picks the PoP](https://blog.blazingcdn.com/en-us/anycast-vs-dns-routing-how-a-cdn-picks-the-pop)

 Evaluated February 2026. Two mechanisms decide which edge serves a request, and they fail on completely different ...

 BlazingCDN ·  Sep 20, 2026, 9:33:54 AM 

[Read more](https://blog.blazingcdn.com/en-us/anycast-vs-dns-routing-how-a-cdn-picks-the-pop)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-13-2026-07-00-30-8027-AM.jpeg)](https://blog.blazingcdn.com/en-us/cloudflare-image-cdn-best-practices-webp-avif)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Cloudflare Image CDN: WebP, AVIF and Resizing Best Practices](https://blog.blazingcdn.com/en-us/cloudflare-image-cdn-best-practices-webp-avif)

 Cloudflare Image CDN in 2026: WebP, AVIF and Resizing Playbook A catalog of 120,000 product photos served through the ...

 BlazingCDN ·  Sep 18, 2026, 8:20:22 AM 

[Read more](https://blog.blazingcdn.com/en-us/cloudflare-image-cdn-best-practices-webp-avif)

[![](https://blog.blazingcdn.com/hubfs/Gemini-Blog/image-Sep-12-2026-07-00-28-5308-AM.jpeg)](https://blog.blazingcdn.com/en-us/see-netflix-open-connect-explore-how-content-reaches-isps-globally)

[Learn](https://blog.blazingcdn.com/en-us/tag/learn)

## [Netflix Open Connect: How Netflix Delivers Video to ISPs](https://blog.blazingcdn.com/en-us/see-netflix-open-connect-explore-how-content-reaches-isps-globally)

 Netflix Open Connect in 2026: The ISP-Embedded CDN Playbook A single Open Connect Appliance sitting in a regional ISP's ...

 BlazingCDN ·  Sep 18, 2026, 8:10:23 AM 

[Read more](https://blog.blazingcdn.com/en-us/see-netflix-open-connect-explore-how-content-reaches-isps-globally)

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