惯性聚合 高效追踪和阅读你感兴趣的博客、新闻、科技资讯
阅读原文 在惯性聚合中打开

推荐订阅源

The Hacker News
The Hacker News
B
Blog RSS Feed
钛媒体:引领未来商业与生活新知
钛媒体:引领未来商业与生活新知
宝玉的分享
宝玉的分享
L
LangChain Blog
Google DeepMind News
Google DeepMind News
酷 壳 – CoolShell
酷 壳 – CoolShell
F
Full Disclosure
T
The Blog of Author Tim Ferriss
月光博客
月光博客
有赞技术团队
有赞技术团队
Last Week in AI
Last Week in AI
aimingoo的专栏
aimingoo的专栏
CTFtime.org: upcoming CTF events
CTFtime.org: upcoming CTF events
freeCodeCamp Programming Tutorials: Python, JavaScript, Git & More
Stack Overflow Blog
Stack Overflow Blog
WordPress大学
WordPress大学
MongoDB | Blog
MongoDB | Blog
小众软件
小众软件
博客园 - Franky
B
Blog
博客园_首页
C
CERT Recently Published Vulnerability Notes
Hugging Face - Blog
Hugging Face - Blog
Threat Intelligence Blog | Flashpoint
Threat Intelligence Blog | Flashpoint
K
Kaspersky official blog
I
Intezer
P
Proofpoint News Feed
博客园 - 叶小钗
S
Schneier on Security
P
Privacy & Cybersecurity Law Blog
Recorded Future
Recorded Future
NISL@THU
NISL@THU
A
Arctic Wolf
Know Your Adversary
Know Your Adversary
C
Cyber Attacks, Cyber Crime and Cyber Security
奇客Solidot–传递最新科技情报
奇客Solidot–传递最新科技情报
The Register - Security
The Register - Security
C
Cisco Blogs
大猫的无限游戏
大猫的无限游戏
S
Secure Thoughts
T
The Exploit Database - CXSecurity.com
Forbes - Security
Forbes - Security
Project Zero
Project Zero
Exploit-DB.com RSS Feed
Exploit-DB.com RSS Feed
Cisco Talos Blog
Cisco Talos Blog
D
Docker
Blog — PlanetScale
Blog — PlanetScale
Cyber Security Advisories - MS-ISAC
Cyber Security Advisories - MS-ISAC
人人都是产品经理
人人都是产品经理

The System Design Newsletter

Fine Tuning AI Models Kubernetes Architecture Graph based Agent Memory Agent to Agent Protocol Claude Folder System Design Mobile What is AI Infrastructure Agentic Engineering How do Docker containers work Design a Payment System OpenClaw Architecture AI Based Knowledge Management System Agentic AI Use Cases Virtualization Architecture AI Agent Memory - A Deep Dive Machine Learning System Design Interview Mobile System Design Interview AI chat assistant Multi Agent System LLM Evals What is a Vector Database Agentic Design Patterns Software Engineer Resume AI Concepts Generative AI System Design AWS S3 System Design Mobile System Design Mobile System Design Interview How RAG Works How Do AI Agents Work What Is Reinforcement Learning System Design Fundamentals
How does CDN work
Neo Kim · 2026-07-03 · via The System Design Newsletter

How does Netflix stream videos worldwide in milliseconds,,, while some sites take “seconds” to load a basic HTML page?

The answer is proximity

i.e., closeness between the servers and end-users.

Imagine a single server to handle global traffic:

  • International users wait 300ms+ just for the first byte from the “distant” server

  • Origin server1 handles all requests from every continent

  • One traffic spike could take down the entire site

Onward.

Get your company in front of 240,000+ tech readers & earn up to $100 for the intro

Think your startup/company should feature its product in this newsletter via sponsorship?

Then introduce me to your marketing manager. Just reply to this email and CC them.

What you’ll get:

  • 1-month free newsletter subscription if they reply to your intro. First 10 intros ONLY.

  • 1-year free newsletter subscription, PLUS $100 cash if it turns into a sponsorship.

(The only requirement is that the marketing manager of your company should reply to your intro email.)

Introduce now →

You can also see the sponsorship details here.

Here’s what you’ll find inside this newsletter:

  • Why websites slow down. The hidden costs of distance, overloaded servers, and bandwidth limits.

  • Why CDNs became essential. How they evolved from a niche scaling solution into core internet infrastructure.

  • What happens when you visit a site. The journey your request takes before content reaches your browser.

  • The building blocks of a CDN. Edge servers, origin servers, DNS, Anycast, GSLB, and the components behind global content delivery.

  • Where CDNs make the massive impact. The industries and applications that depend on them every day.

  • Why CDNs aren’t a silver bullet. The trade-offs, limitations, and operational challenges every engineer should understand.