Low-Level Design
2 pieces
Lessons
LLD Foundations
What Is Low-Level Design? HLD vs LLD vs DSA
Three interview rounds, three different games. Learn exactly where LLD sits, what interviewers grade, and why great engineers still fail this round.
4 min read
Design Patternsmember
The Strategy Pattern: Kill Your If-Else Ladders
The pattern behind every pluggable behavior: payment methods, spot assignment, ranking algorithms. Learn the shape, the code, and when NOT to use it.
4 min read