Solving 200-300 good Leetcode problems will only help you clear 50% of the rounds. You still have to master system design basics. I struggled a lot until I sat down and focused deeply on the basics. Start with these 11 basic & essential concepts: 1. Scalability - Ensures systems can handle increased load and grow efficiently. Link → https://lnkd.in/dD-GZpVq 2. Latency vs Throughput - Balances speed and capacity in system performance. Link → https://lnkd.in/dscK9g3E 3. CAP Theorem - Explains the trade-offs between consistency, availability, and partition tolerance in distributed systems. Link → https://lnkd.in/dFpgDSnY 4. ACID Transactions - Guarantees reliable database processing through atomicity, consistency, isolation, and durability. Link → https://lnkd.in/dkkmMu_D 5. Rate Limiting - Controls the amount of incoming and outgoing traffic to prevent overload and abuse. Link → https://lnkd.in/dY9NqRG9 6. API Design - Ensures APIs are user-friendly, efficient, and mainta...