Interview questions
A structured collection of guides, architectural principles, and deep dives for mastering Interview questions.
Functional requirements (FR)
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Non-functional requirements (NFR)
- Add non‑functional requirements here.
Core Topics & Reference Material
Design Dream11 (Fantasy Sports & Real-Time Leaderboard)
Principal-level architecture drill for designing a high-concurrency fantasy sports platform with real-time match scoring, high-frequency leaderboard computation, and peak traffic burst handling.
Important Questions
Important Questions
Karat Questions
Karat Questions
Coupang Staff & Principal Engineering Interview Set
Production design drills and problem-solving references from Coupang senior interview loops, covering real-time stock watchlists, movie ticketing concurrency, and rate-limiting gateways.
High Level Design (Notification Service & Job Scheduler)
Enterprise high-level architecture drill covering multi-channel notification fanout, provider circuit breaking, and distributed job scheduling.
Design Instamart (Quick Commerce 10-Minute Delivery)
Architecture drill for designing an ultra-fast grocery delivery platform (Instamart / Blinkit / Zepto) with dark store inventory, geo-fenced order routing, real-time picker-packer orchestration, and dynamic delivery SLA tracking.