Lesson 7: A simple HTTP service

[X] Simple HTTP service: ring handlers, libraries
[X] What is a request? What is a response?
[X] Routing
[X] Middlewares
[X] A toy problem: Guess what number I’m thinking?
[X] Sending HTTP requests

Preparatory Material for Lesson 7

Read Hypertext_Transfer_Protocol, in particular the section on Message Format
Read through https://www.restapitutorial.com/ and the example session.
Read https://github.com/ring-clojure/ring/wiki/Concepts
Read https://github.com/weavejester/compojure/wiki/Routes-In-Detail
checkout this repo: https://github.com/privisi/clojure-training-2024-simple-server-playground and run it in your IDE, then visit http://localhost:3001

Lesson plan

Discuss problem solutions — see these points:

points?

Things to explain

The Ring model
building a simple app.
compojure and middleware
Idempotent functions, request methods, caching
Where’s the state?

Tags

starting-point
request-methods
manual-dispatching
compojure-routing
http-ring-responses
destructuring-routes
understanding-middlewares
using-middleware-and-destructured-routes
separation-of-concerns