How the web works: client and server, HTTP request and response, DNS, hosting, browsers

Live lesson

How the web works: client and server, HTTP request and response, DNS, hosting, browsers

Orientation, web fundamentals and AI policy · 60 min

Invoice.phpREADME.md

1final class InvoiceService

3 public function issue(Order $order): Invoice

4 {

5 // Idempotent: one invoice per order

6 return Invoice::firstOrCreate([

7 'order_id' => $order->id,

8 'total' => $order->total(),

9 ]);

10 }

11}

✓ 195 tests passed · coverage 92%

Orientation, web fundamentals and AI policy

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Class 2 of 104 · Week 1 · 60 minutes · in person

Topic: How the web works: client and server, HTTP request and response, DNS, hosting, browsers; front end vs back end vs database

In the lab: Trace one page load in Chrome DevTools, Network tab.