How the Web Works

Name resolution, transport and encryption — everything that happens before your code runs.

3 concepts · 85 minutes

• How the Web WorksThe 200ms journey from typing a URL to seeing pixels — the map every other web topic hangs off.
• DNSA globally distributed, aggressively cached phone book — and the reason your deploy 'didn't work' for 20 minutes.
• TLS & HTTPSWhat the padlock actually guarantees — and the three things it does not.