Your question is Design a Logger System. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Design a logger system (LLD, discuss SOLID principles and design patterns). Asked in the Round 2 LLD stage. Explain the object model, public API, severity handling, formatting, and output destinations. Discuss how your design remains extensible, testable, and safe under concurrent use.