2024/02/04 c1 - c4
Chapter 1: scale from zero to millions of users
single server setup
DNS domain name system is 3rd party service that parses domain name to internet protocal ip address.
Once the IP address is obtained, HTTP requests are sent directly to web server. The web server returns HTML pages or JSON response for rendering.
web application: server-side language to handle business logic, storage, and client-side language for presentation
mobile application: HTTP protocol is the communication protocol between mobile app and web server. JSON is used API response format to transfer data due to its simpliicity.
