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

Storing copies of frequently accessed data in faster storage to reduce load times and server processing.

A technique for making asynchronous HTTP requests from a web page without reloading the entire page.

REST (Representational State Transfer)

An architectural style for designing networked applications using standard HTTP methods and stateless communication.

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

A technique that delays loading non-critical resources until they are needed, improving initial page load performance.

An automatic OPTIONS request sent by browsers before certain cross-origin requests to check if the actual request is permitted.

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