Backend Fundamentals
Learn the core OS and protocol building blocks behind modern backend systems. Start here if you're new to backend engineering.
Beginner6 steps~1.2 hours
Progress0/6
Bitwise operators, memory storage hierarchy, and binary representation.
10 min read
How operating systems coordinate program execution and context switches.
10 min read
How operating systems isolate memory pages and translate virtual addresses.
10 min read
Everything is a file: stdin, stdout, sockets, and I/O multiplexing.
10 min read
Methods, headers, status codes, and the request/response lifecycle.
12 min read