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I Created the Most Comprehensive System Design Interview Resource

I’m excited to launch my premium pattern-focused System Design interview resource.

Dec 25, 2025 • Ashish Pratap Singh

How to Use AI Effectively in Large Codebases

AI coding assistants are everywhere now.

Dec 12, 2025 • Ashish Pratap Singh

Pub-Sub vs Message Queue vs Message Broker

What’s the difference?

Dec 10, 2025 • Ashish Pratap Singh

Why You Should NEVER Start With Microservices

The hidden cost of premature optimization

Dec 8, 2025 • Ashish Pratap Singh

November 2025

Linked List: Explained in 4 minutes

Linked List is one of the most fundamental data structures in computer science and a must-know topic for coding interviews.

Nov 16, 2025 • Ashish Pratap Singh

Latency vs. Throughput vs. Bandwidth

Latency, throughput, and bandwidth are the core metrics that describe the performance of a network or distributed system.

Nov 13, 2025 • Ashish Pratap Singh

Big-O Notation: Explained in 8 Minutes

Big O Notation is a way to measure how efficiently your code performs as the input size grows.

Nov 4, 2025 • Ashish Pratap Singh

October 2025

Top 6 API Architecture Styles

An API defines how two systems communicate, what data can be shared, and in what format.

Oct 30, 2025 • Ashish Pratap Singh

How to Securely Store Passwords in a Database

A password is meant to be secret. If someone steals it, they do not just break into one account, they often get access to every other place where the…

Oct 28, 2025 • Ashish Pratap Singh

The secret architecture behind "username already taken"

When you try to sign up on a platform like Instagram and type in your username, the system almost instantly tells you whether it’s available or not. If…

Oct 1, 2025 • Ashish Pratap Singh

September 2025

How Indexing Works in Distributed Databases

In a single-node database, indexing is relatively simple.

Sep 28, 2025 • Ashish Pratap Singh

Clean Code Tips I Learned from Senior Engineers

Being good at coding and writing good code are two different skills.

Sep 17, 2025 • Ashish Pratap Singh

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