Days 31–40

System Design · 10 lessons

  1. System Design Concepts: Meeting Design Requirements — Video Reference: System Design Concepts: Meeting Design Requirements
  2. Data Centers in System Design — Socho aap Swiggy ke delivery manager ho. Har roz lakhon orders aate hain, aur log chahte hain ki unka food exactly 30‑45 minutes mein pohonch jaye. Agar aapke servers ek hi data…
  3. Proxy Servers: How Proxies Work — Imagine Swiggy’s order system during a big sale. Every user’s request (GET /menu, POST /order, etc.) hits the public API gateway. If we let every request go directly to the…
  4. The Essential Guide to Load Balancing Strategies and Techniques — Video Reference: The Essential Guide to Load Balancing Strategies and Techniques
  5. SQL Tutorial for Beginners — SQL (Structured Query Language) humen structured, ACID compliant databases provide karta hai jisse hum high traffic ke liye reliable aur fast data access kar sakte hain.
  6. SQL Transactions and ACID Properties — If koi bhi step fail ho jaata (e.g., payment gateway down, inventory out of stock), humko ya to partial data chahiye (order placed but payment not captured) ya inconsistent state…
  7. Hands‑On Load Balancer Setup: Distribute Traffic Across Servers — Video Reference: Hands‑On Load Balancer Setup: Distribute Traffic Across Servers
  8. REST vs GraphQL — Yeh 5 alag HTTP requests hote hain, network latency badh jaati hai, mobile data consume hota hai, aur backend ko multiple database hits karne padte hain. Agar user slow network pe…
  9. How to Design APIs Like a Senior Engineer (REST, GraphQL, Auth, Security) — Video Reference: How to Design APIs Like a Senior Engineer (REST, GraphQL, Auth, Security)
  10. System Design Explained: APIs, Databases, Caching, CDNs, Load Balancing & Production Infra — Video Reference: System Design Explained: APIs, Databases, Caching, CDNs, Load Balancing & Production Infra