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Hotel Booking System Design
This blog walks through a hotel booking system from an interviewer’s perspective, showing how to model multi-night availability, handle retries and partial failures, reason about pricing and cancellations, and clearly communicate trade-offs while adapting the design under interview pressure.
Khayyam Hashmi
Feb 6 · 2026
BookMyShow System Design
This blog walks through BookMyShow from a System Design interviewer’s perspective, teaching how to narrate the end-to-end booking flow, model seat availability as a state machine, handle retries and payment failures safely, and defend consistency-over-availability trade-offs while explaining decisions clearly under interview pressure.
Zarish Khalid
Feb 6 · 2026
What is the OpenAI System Design
OpenAI System Design explained, covering AI inference orchestration, GPU scheduling, safety pipelines, scalability, latency optimization, and cost trade-offs.
Mishayl Hanan
Feb 6 · 2026
What is the Zoom System Design
Zoom System Design explained in depth, covering real-time audio/video streaming, signaling, scalability, latency optimization, reliability, and interview-ready trade-offs.
Areeba Haider
Feb 4 · 2026
ML System Design Explained
ML System Design explained, covering data pipelines, feature stores, model training, serving, monitoring, scalability, and production trade-offs.
Mishayl Hanan
Feb 3 · 2026
E-Commerce System Design
A practical interview blog that breaks down core services and data consistency, walks through checkout end-to-end, covers key failure scenarios, and explains how to handle flash sales and measure system health.
Zarish Khalid
Feb 2 · 2026
ChatGPT System Design Explained
ChatGPT System Design explained, covering conversational context, streaming responses, GPU inference scheduling, safety pipelines, scalability, and cost trade-offs.
Mishayl Hanan
Feb 2 · 2026
Elevator System Design
A structured walkthrough of Elevator System Design, covering clarifying questions, request modeling, scheduling trade-offs, request assignment logic, real-world traffic scenarios (rush hour and mixed flow), failure/safety handling, scaling from centralized to zoned control, and the metrics used to tune performance in production.
Khayyam Hashmi
Jan 30 · 2026
ATM System Design
In this blog, we’ll build an ATM System Design, explaining how transactions stay ACID-correct, introducing a withdrawal state machine (with reversal and reconciliation), covering interbank routing and settlement, and showing how to think about fraud prevention and observability.
Zarish Khalid
Jan 29 · 2026
