Advanced

The Basics · Proficient - advanced patterns and performance

• How the internet works: client, server, requestUnderstand who asks what from whom when a web page appears on your screen.
• URLs, domain names and DNSTake a web address apart and meet the giant directory that turns names into IP addresses.
• HTTP in plain sight: methods and status codesRead a real request and a real response, and learn what 200, 404 and 500 actually mean.
• The browser developer toolsOpen the tools built into your browser to inspect, test and diagnose a page.
• localhost, ports, and "it works on my machine"Run a server on your own computer and understand why nobody else can see it.