What do you need to know to get into backend development?

Question

Backend

What theory do you need to know to start learning Backend in addition to the programming language? I was advised to start with:
- Operating systems
- Networks and protocols
What else do you need?

Answer 1

Depending on the project:
→ tcp/udp or http/https
→ serialization
→ if a PL with garbage collection, then the principle of operation, operating modes
→ request profiling
→ interaction with databases
→ caching
→ multithreading + asynchrony basics
+ main backend libraries / frameworks under your stack
+ for the web in general terms to represent how the target web server works / is configured

Answer 2

You need to know how to google. This is the first thing to learn. If you don't know how to google - no one needs you