Engineering Blog

Deep dives into system design, distributed architectures, and interview strategies.

AI System DesignMarch 4, 2026

How AI Assists in Estimation and Trade-offs during Distributed Systems Interviews

Stop memorizing. Start reasoning. This is a 5000-word deep analysis of how AI is fundamentally changing how engineers prepare for distributed systems interviews — from estimation to architecture evaluation.

22 min readRead full story

ArchitectureMarch 4, 2026

How to Design a Distributed Rate Limiter for 1M QPS

Scaling a rate limiter to 1M QPS requires addressing the bottleneck of single-threaded centralized Redis structures. Learn how to combine local in-memory caching with asynchronous Redis Lua Scripts.

15 min readRead full story

ArchitectureMarch 4, 2026

How to Design a Real-Time Chat Application like Discord

Handling 10 million concurrent active users on a chat application isn't just about WebSockets. Discover how to architect the Presence Service, Message Fan-out, and NoSQL storage engines.

14 min readRead full story

ArchitectureMarch 4, 2026

System Design Deep Dive: How Uber Calculates Surge Pricing in Real-Time

A comprehensive architectural breakdown of real-time geospatial matching, dynamic pricing algorithms, and handling millions of concurrent events.

15 min readRead full story

ArchitectureMarch 3, 2026

Designing Amazon DynamoDB: Inside a Global NoSQL Data Store

How does Amazon engineer a database that guarantees high availability during hard network partitions? Delve into the original Dynamo whitepaper's implementation details.

18 min readRead full story

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