AWS

Amazon CloudFront Explained: CDN, Caching, Security & Real-World Architecture

Learn Amazon CloudFront from basics to real-world architecture. Understand CDN, edge locations, caching, TTL, cache invalidation, origins, cache behaviors, CloudFront with S3 and ALB, OAC, AWS WAF, HTTPS, and interview concepts with practical examples.

Cybersecurity & API Security

Millions of Requests Hit Your API? DoS vs DDoS vs HTTP Flood Explained

What happens when millions of requests suddenly hit your application? Learn the real difference between DoS, DDoS, and HTTP Flood attacks—and how rate limiting, WAF, CDN, and DDoS protection keep your APIs alive.

System Design - Concepts

Ports — How Does a Server Know Which Application Should Receive a Request?

A CDN is a distributed network of servers located in different geographical locations. It stores and serves frequently requested content closer to users.

System Design - Concepts

IP Address — How Devices Find Each Other on a Network

A CDN is a distributed network of servers located in different geographical locations. It stores and serves frequently requested content closer to users.