2021 — Gaurav Sen System Design

Adding more machines to your pool. This is the backbone of modern distributed systems and introduces the need for load balancers. 2. The Power of Load Balancers

In the ever-evolving landscape of software engineering, few skills are as coveted—and as intimidating—as . It is the discipline that separates a "coder" from an "architect." When aspiring engineers search for the best resources to bridge this gap, one name consistently rises to the top: Gaurav Sen .

Limitations and caveats

"Design a system so that you can never be replaced by a junior engineer." — Gaurav Sen

HTTP is inefficient for real-time chat because it requires constant polling. Instead, use WebSockets , which establish a bi-directional, persistent TCP connection between the client and server. Use a Chat Service to track active user sessions, a Message Queue (like Kafka or RabbitMQ) to handle spikes in traffic, and a NoSQL database (like Cassandra) to store message history efficiently. Designing a Notification System gaurav sen system design

What sets Gaurav apart is his ability to transition from abstract concepts to concrete implementations. While many educators focus solely on the "what" of system design (e.g., "use a load balancer"), Sen focuses on the and the "how much." He emphasizes the importance of back-of-the-envelope calculations, forcing engineers to consider throughput, latency, and storage requirements before picking a database. This mathematical rigor ensures that designs are not just theoretical, but scalable and cost-effective. Core Themes and Principles

When explaining video streaming architecture, Sen shifts the focus to content delivery networks (CDNs) and file chunking. He illustrates how Netflix converts raw video files into hundreds of different formats and resolutions, storing them closer to the user to eliminate buffering and optimize bandwidth. Uber: Real-Time Geospatial Tracking Adding more machines to your pool

Across his YouTube channel, courses, and public talks, Gaurav Sen emphasizes a set of core principles that form the bedrock of his system design philosophy. These are the non-negotiable skills any engineer must master to design robust systems: