Web Application Architecture: Full Request-Response Lifecycle

In this video, we take you behind the scenes of a modern web application architecture, following a single request from the moment a user clicks to the final response. We’ll cover everything from DNS resolution to load balancers, API gateways, and backend services like databases and CDNs. Learn how major platforms like Amazon and Netflix keep their systems fast and resilient, ensuring a smooth user experience. If you're looking to understand how web applications handle requests and scale efficiently, this video breaks down each step.

Timestamps:
0:00 – Introduction: Understanding the Request-Response Lifecycle
0:26 – DNS Resolution: Translating Domains into IP Addresses
1:00 – CloudFront: Caching and Content Delivery for Fast Access
1:30 – Web Application Firewall (WAF): Protecting Against Attacks
1:52 – Nginx: Reverse Proxy and Dynamic Content Caching
2:16 – Load Balancer: Distributing Traffic for High Availability
4:10 – API Gateway: Validating and Routing Requests
4:27 – Backend Services: Microservices Handling User Requests
5:03 – Database Layer: Choosing Between SQL and NoSQL Databases
5:42 – Additional Services: Authentication, Caching, and Monitoring
6:45 – Conclusion: Delivering a Fast Response and Reliable User Experience

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AWS Certification:
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