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Premium Interview Content

Ace the System
Design Interview.

Stop watching surface-level YouTube videos. These are highly technical, rigorously detailed blueprints covering the hardest topics asked at FAANG.

The Core 5 Masterclasses

Phase 1
System Design 5 min read

Designing a Global Rate Limiter

A deep dive into Token Buckets, Sliding Windows, and Redis Lua scripting to prevent DDoS and abuse at massive scale.

System Design 6 min read

Designing a Payment Gateway (Stripe)

Learn how to process billions in financial transactions safely. Covers Idempotency, Double-Entry Ledgers, and PCI Compliance.

System Design 4 min read

Designing a URL Shortener (TinyURL)

Master the classic interview question. Learn about Base62 encoding, Snowflake ID generation, and capacity math.

System Design 5 min read

Designing a Distributed Task Scheduler

How to reliably schedule millions of delayed jobs. Covers Timing Wheels, Distributed Locking, and At-Least-Once delivery.

System Design 12 min read

Building a Distributed Cache

The definitive guide to production caching. Read-through vs Write-behind, Thundering Herds, and Redis eviction policies.

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More Content Coming Soon

Data Structures & Algorithms, Graph Theory, and advanced architectural patterns are in production.

CodeSprintPro

Deep-dive technical content on System Design, DSA, Java, Databases, AI/ML, and AWS — by Sachin Sarawgi.

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