Podcast · Tech & Science

System Design Mastery

by RaviRaaja Lakshmanan · Tamil · Tech & Science

Learn system design the practical way in Tamil. Each episode features a realistic interview-style conversation where complex concepts like caching, sharding, scalability, load balancing, and data flow are explained clearly using Tamil narration and English technical terms. Perfect for engineers prep

New episodes: Daily
Typical length: 15 min
Latest: 18 Jan 2026
Language: Tamil

Latest episode

18 Jan 2026 · 16 min

Buffered, Eventually - Youtube System Design

Buffered, Eventually is a system design podcast where two senior engineers break down how large-scale video platforms like YouTube are built—and the tradeoffs behind every layer. We discuss video upload pipelines, transcoding, storage, CDN delivery, feed and search indexing, recommendations, and view counting at scale. Each episode focuses on real-world constraints: latency vs quality, cost vs reliability, and consistency in systems that serve billions of hours of video. No hype, no buzzwords—just practical conversations about designing massive media systems.

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Earlier episodes 27 most recent

S1 · E27 · 17 Jan 2026 · 13 min
Indexed, Eventually
Indexed, Eventually is a system design podcast where two senior engineers break down how large-scale post search systems are built—and where they break first. Using a Facebook-style post search as a running example, we dive into inverted indexes, write-heavy ingestion, ranking by likes vs recency, caching strategies, and the tradeoffs between freshness, cost, and performance. We talk through real constraints: high write volume, massive storage, hot vs cold data, and why “just sort at query time” never works. No buzzwords—just practical design decisions and honest tradeoffs.
S1 · E26 · 16 Jan 2026 · 14 min
Fitness Tracking Apps - Feed Meets Telemetry
Feed Meets Telemetry is a system design podcast where two senior engineers break down how fitness platforms like Strava are built—and the tradeoffs behind every design choice. We talk about activity tracking, GPS ingestion, real-time sync, feed generation, leaderboards, data accuracy, and scalability. No hype, no buzzwords—just clear conversations about designing large-scale fitness and activity systems.
S1 · E25 · 15 Jan 2026 · 13 min
Nearest Cab - Uber System Design
Nearest cab is a system design podcast where two senior engineers break down how ride-hailing platforms like Uber are built—and the tradeoffs behind every decision. We discuss real-time matching, geo-indexing, dispatch algorithms, pricing, reliability, and scalability under extreme load. Each episode focuses on practical design choices, constraints, and failure scenarios drawn from real production systems. No hype, no theory dumps—just clear conversations about building large-scale, real-time systems.
S1 · E24 · 14 Jan 2026 · 15 min
Verified Review - A Review platform at scale
Verified Review is a system design podcast where two senior engineers break down how local business review platforms are built—and the tradeoffs behind every design choice. The conversations are practical and experience-driven, focusing on real-world constraints rather than idealized solutions. No buzzwords, no hype—just clear explanations of complex systems and the tradeoffs engineers make when building review platforms used by millions. If you want to understand how reputation and review systems work under the hood, this podcast is for you.
S1 · E23 · 13 Jan 2026 · 13 min
At Scale: Messaging System
A system design podcast where two senior engineers break down how messaging platforms like WhatsApp are built at scale—and the tradeoffs behind every architectural choice. We discuss core problems such as real-time messaging, message delivery guarantees, end-to-end encryption, scalability, latency, storage, and reliability. Each episode focuses on why certain decisions are made, what alternatives exist, and what you gain or lose with each approach. The conversations are practical and experience-driven—no fluff, no theory dumps. Just clear explanations of complex systems, real-world…
S1 · E22 · 12 Jan 2026 · 14 min
Scroll Culture - News Feed Design
The Scroll is a system design podcast where two senior engineers break down how real-world systems are built—and the tradeoffs behind every decision. From news-feed architectures and recommendation systems to scalability, performance, and reliability, we talk through what actually works in production and why. If you’re an engineer who enjoys understanding how systems really work , this podcast is for you.
S1 · E21 · 20 Dec 2025 · 15 min
Why This App Knows When Prices Drop
That price-drop alert didn’t come from vibes. This episode explains how price tracking systems like CamelCamelCamel work — from crawling and deduping product data to alerting users at scale — in a chill, no-textbook system design walkthrough.
S1 · E19 · 19 Dec 2025 · 16 min
Instagram Isn’t Just Photos
That feed refresh is doing a lot of work. This episode breaks down how Instagram’s system design handles uploads, timelines, likes, and massive traffic — explained in a chill, no-textbook way.
S1 · E20 · 18 Dec 2025 · 13 min
Why Live Comments Don’t Lag (Usually)
That comment flying up the screen didn’t just magically appear. This episode explains how Facebook Live-style comment systems work — handling real-time writes, massive fanout, and ordering — all without killing latency.
S1 · E18 · 17 Dec 2025 · 15 min
Calm Down, API
Not every request deserves to get through. This episode explains how distributed rate limiters work — how systems track requests, stay consistent across nodes, and fail gracefully — all in a clean, no-overengineering system design walkthrough
S1 · E17 · 16 Dec 2025 · 14 min
Your News Feed Isn’t Random
That headline didn’t just show up by accident. In this episode, we explore how news aggregators like Google News work under the hood — from content ingestion and deduplication to ranking, freshness, and user personalization — all explained without corporate jargon
S1 · E16 · 15 Dec 2025 · 9 min
LeetCode, But From the Backend
You solve the problems — but how does the platform work? This episode explores the system design behind a LeetCode-style platform, covering code execution, problem storage, user submissions, scaling, and reliability, all explained without the boring textbook energy.
S1 · E15 · 14 Dec 2025 · 15 min
Clouded Thoughts: How Dropbox & Google Drive Actually Work
In this episode, we break down how modern file storage systems like Dropbox and Google Drive work — from syncing and version control to scalability and reliability — in a way that doesn’t feel like a lecture. Real systems, real problems, zero boring slides.
S1 · E14 · 10 Dec 2025 · 16 min
The Doc That Never Sleeps
Ever typed in Google Docs and watched someone else edit mid-sentence ? We unpack the real-time magic behind collaborative editing—OT vs CRDTs, syncing state, conflict resolution, and how Docs stays smooth even when your group project is not.
S1 · E13 · 9 Dec 2025 · 17 min
The K in OK - Top K Recommendation System
YouTube’s recommendation engine works overtime to find your personal top picks. We explore how it filters candidates, scores them, and ranks the winners—kind of like a talent show, but with neural networks and way less singing.
S1 · E12 · 8 Dec 2025 · 15 min
Swipe Right on Payments
Why does a simple “Buy Now” click trigger a whole fintech orchestra? We unpack the tech behind modern payment gateways—auth flows, settlement, risk checks, and the whole vibe. Secure payments, but make it digestible.
S1 · E11 · 7 Dec 2025 · 16 min
Crawl Me Maybe
Ever wondered how websites get scraped, indexed, and turned into searchable magic? We break down web crawlers—how they think, how they roam, and why they occasionally break the internet. System design made fun, chaotic, and actually understandable.
S1 · E10 · 6 Dec 2025 · 16 min
Next Up: Your New Addiction
YouTube’s recommendation engine is basically that friend who gets you. But how does it work? We decode the machine-learning magic, the watch-time traps, and the wild design behind what you click next. Nerdy, relatable, and dangerously bingeable.
S1 · E9 · 5 Dec 2025 · 13 min
Cache Me If You Can
Welcome to Cache Me If You Can , the podcast where we break down the chaotic, beautiful world of distributed caching—no gatekeeping, no buzzword soup. Just real talk about scaling apps, avoiding outages, and surviving the latency monster. If you’re a dev, an architect, or just cache-curious, this pod’s for you.
S1 · E8 · 4 Dec 2025 · 16 min
TradeStack – The Zerodha System Design Show
TradeStack breaks down the architecture and engineering behind modern trading platforms inspired by pioneers like Zerodha. Each episode dives into how real-time market data streams are handled, how order execution systems stay fast and reliable, and what it takes to design a low-latency trading platform that serves millions of users. Learn about microservices, OMS/RMS design, WebSocket scaling, risk engines, exchange integration, queuing systems, caching, distributed system challenges, and the tech decisions that make trading apps stable during peak volatility. Perfect for system designers,…
S1 · E7 · 3 Dec 2025 · 10 min
Behind the Metrics: Architecting an Ad Click Aggregator
Ever wondered how advertising platforms count ad clicks so fast and so accurately? This episode explores the engineering and distributed systems magic that powers an Ad Click Aggregator . From Kafka streams to time-windowed aggregations, from fault tolerance to at-least-once semantics, we break it down in a practical and engaging way. Perfect for engineers and analytics enthusiasts.
S1 · E6 · 3 Dec 2025 · 14 min
Inside the Instant Delivery Engine: System Design of Gopuff, Blinkit & Zepto
In this episode, we break down the real-time system architecture behind ultra-fast delivery platforms like Gopuff, Blinkit, and Zepto . We explore how these companies scale dark stores, manage inventory accuracy, optimize delivery routes, handle surge demand, and maintain ultra-low latency order fulfillment. This is a deep-dive, interview-style walkthrough ideal for anyone preparing for system design interviews .
S1 · E5 · 2 Dec 2025 · 15 min
Sold! The Online Auction Show
Sold! is the definitive podcast for anyone curious about the technology, architecture, and engineering behind modern online auction platforms. Whether you’re a system designer, developer, product builder, or tech enthusiast, this show takes you deep into the systems that power real-time bidding, high-traffic marketplaces, payment flows, fraud detection, and scalable data architectures.
S1 · E4 · 2 Dec 2025 · 14 min
Tiny Links, Big Impact
Short links, long conversations. We discuss how URL shortening transforms marketing, boosts conversions, and simplifies user journeys. Perfect for marketers, developers, and anyone building better links.
S1 · E3 · 1 Dec 2025 · 16 min
Scheduling Chaos: Designing a Distributed Job Scheduler
Ever wondered how massive systems schedule thousands of tasks every second? In this episode, our duo explores the system design of a distributed job scheduler—unpacking queues, workers, heartbeat mechanisms, leader election, consistency models, and more. An intuitive, story-driven breakdown of one of the most essential components in modern distributed systems.
S1 · E2 · 1 Dec 2025 · 13 min
Behind the Swipe: How Dating Apps Are Built
A conversational deep-dive into how modern dating services are engineered. Join our duo as they walk through a real-world system design interview centered around building a Tinder-like dating platform. From user matching to real-time recommendations and scalable architecture, this episode breaks down complex concepts in a simple, intuitive way. Perfect for tech enthusiasts, interview preppers, and anyone curious about what happens behind the swipe.
S1 · E1 · 30 Nov 2025 · 14 min
The Architecture Behind High-Demand Ticket Booking
Ever wondered how platforms like Ticketmaster handle millions of users rushing to book the same seat at the same moment? In this episode, we explore the architecture, data flow, and strategies that make high-demand ticketing possible. Learn about seat locking, transactions, queues, rate limiting, and designing for massive spikes.

About System Design Mastery

System Design Mastery is a Tamil tech & science podcast from RaviRaaja Lakshmanan. Melo plays each episode straight from the publisher's own feed — no ads added, no account needed — and remembers where you stopped, in this browser only.

Publisher: RaviRaaja Lakshmanan
Language: Tamil தமிழ்
Category: Tech & Science
New episodes: Daily
Typical length: 15 min
Latest episode: 18 Jan 2026
Feed: RSS — paste into any podcast app
Apple Podcasts: podcasts.apple.com/podcast/id1860501661
Rights: RaviRaaja Lakshmanan

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