TMIMI Explains
Short films, each with a page that goes further. Every episode answers one question, precisely. It shows real requests and real output, and gives you something to try on your own computer.
01 · HTTP
A browser, a phone app or a small device: every client sends the same kind of message. Real requests from three clients, four common methods on one order, and what a status code tells you.
Open episode 01: What does a client actually say to a server?02 · IP addresses, ports, NAT
Your laptop and your phone share one internet connection. Private and public addresses, ports, and the table your router keeps: how each answer finds the right device.
Open episode 02: How does a request reach the server, and how does the answer come back?03 · Status codes
The server chooses three digits, and every program acts on them. The five families, the redirects a browser remembers, 304 and Retry-After, and what a lying 200 does to apps, monitors and search engines.
Open episode 03: What does a status code really promise?04 · How browsers render
One address, eight requests, and a page a moment later. The tree the browser builds, the chain of files that ask for more files, the stylesheet it waits for, scripts with and without defer, and the way to pixels.
Open episode 04: What does a browser do with the page it receives?05 · How DNS works
You type a name, but the network delivers to numbers. The copy on your computer, the resolver that asks for you, the root and .com servers that only point the way, the owner’s name server that decides, the time to live, and secure DNS.
Open episode 05: How does your browser find a website from its name?The episodes follow the order of the course, starting with the web itself.
07 · The four families of apps
Every app draws pixels and asks the phone for help. Native, React Native, Flutter, hybrid and web apps answer both differently: the system, an engine of their own or a browser draws; native code or the browser asks.
Open episode 07: Who draws the pixels of a mobile app?Each film opens a chapter of the course, with real captures to try on your own phone.
