Web Development Intermediate

What is CDN (Content Delivery Network)?

A distributed network of servers that delivers web content to users from the geographically closest location.

CDNs cache content (images, CSS, JavaScript, videos) at edge servers worldwide. When a user requests content, it is served from the nearest edge server instead of the origin server, reducing latency and load.

Benefits include faster page loads, reduced bandwidth costs, DDoS protection, and high availability. Popular CDNs include Cloudflare, AWS CloudFront, Akamai, and Fastly.

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Related Terms

Static Site Generator (SSG)

A tool that generates a complete static HTML website from templates and content at build time, requiring no server-side processing.

An XML file that lists all important URLs on a website, helping search engines discover and crawl content efficiently.

DOM (Document Object Model)

A programming interface for HTML documents that represents the page structure as a tree of objects that can be manipulated with JavaScript.

WebAssembly (Wasm)

A binary instruction format that enables near-native performance execution of code in web browsers alongside JavaScript.

A high-performance RPC framework using Protocol Buffers and HTTP/2 for efficient service-to-service communication.

Web Caching Strategies

Techniques for storing copies of web resources at various levels to reduce server load, bandwidth, and response times.

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