Last updated: Mar 25, 26 00:28 UTC | Permalink

4 - Design Patterns for Web Applications

Learning Objectives:

After this lecture, you will be able to:

• Explain the role of “client” and “server” in the context of web application programming
• Explain the role of HTTP endpoints and REST APIs versus WebSocket communication and event-driven messaging in a web application
• Describe the fundamental differences between the three layers of the controller, service, and repository layers in a C-S-R architecture
• Understand how the C-S-R architecture works in the context of a basic Express application
• Understand a couple of key terms:
  • business logic
  • statelessness
  • horizontal and vertical scaling
  • microservices

Important Dates:

• Individual Project 1 Due Wednesday, January 21 by 11am (EST)

Lecture Slides:

• Web Applications Slides PDF, PPT

Tutorials

• Guide to API Requests and Installing Postman
• Socket IO

Resources

• “What is a REST API?”
• “What’s the Difference Between RPC and REST?”
• Socket.io - a library for real-time web applications
• Content Delivery Networks on Wikipedia
• Netflix’s Microservices
• Martin Fowler’s Microservices Guide
• Podcast on Microservies: “Chris Richardson on Microservice Patterns” - SE Radio
• Counterpoint podcast on Monolith: “Roberta Arcoverde on Stack Overflow’s Monolith”
• Local-First Web Development