Biraj Karki (@birajkarki)

How Big Tech Checks Your Username in Milliseconds ⚡: The Definitive Guide to Scalable System Design

When you type a username during app signup and instantly see “This username is already taken,” you’re witnessing a marvel of modern engineering. Tech giants like Google, Amazon, Meta, and Twitter handle billions of users, processing millions of queri...

Jul 4, 2025 · 6 min readbirajkarki.hashnode.dev

Understanding Nginx: The Event-Driven Powerhouse Behind Scalable Web Servers

Nginx: The Event-Driven Powerhouse for Scalable Web Performance Nginx (pronounced "Engine-X") is the silent force powering some of the world's busiest websites, from streaming giants like Netflix to e-commerce platforms like Amazon. Its ability to ha...

May 22, 2025 · 9 min readbirajkarki.hashnode.dev

11 Key Data Structures We Use Every Day

Data structures are the building blocks of modern programming and play a crucial role in organizing and manipulating data. From simple arrays to complex graphs, they enable software developers to efficiently access and process information, making the...

May 3, 2023 · 11 min readbirajkarki.hashnode.dev

Comparing Leadership Styles: Transformational, Servant, Autocratic, Democratic, and Laissez-Faire

Leadership is a crucial aspect of any organization, and there are several leadership styles available for leaders to adopt. The most common leadership styles include transformational, servant, autocratic, democratic, and laissez-faire. Each leadershi...

Apr 22, 2023 · 7 min readbirajkarki.hashnode.dev

Decoding SSL, TLS, and HTTPS: A Comprehensive Explanation

In today's digital world, security is a critical concern for websites and online businesses. With cyber threats on the rise, it's essential to understand the technologies that protect sensitive information transmitted over the internet. Three commonl...

Apr 20, 2023 · 6 min readbirajkarki.hashnode.dev

Biraj Karki

About

Available for

Biraj Karki's blogs

How Big Tech Checks Your Username in Milliseconds ⚡: The Definitive Guide to Scalable System Design

Understanding Nginx: The Event-Driven Powerhouse Behind Scalable Web Servers

11 Key Data Structures We Use Every Day

Comparing Leadership Styles: Transformational, Servant, Autocratic, Democratic, and Laissez-Faire

Decoding SSL, TLS, and HTTPS: A Comprehensive Explanation

Biraj Karki

About

Available for

Biraj Karki's blogs

How Big Tech Checks Your Username in Milliseconds ⚡: The Definitive Guide to Scalable System Design

Understanding Nginx: The Event-Driven Powerhouse Behind Scalable Web Servers

11 Key Data Structures We Use Every Day

Comparing Leadership Styles: Transformational, Servant, Autocratic, Democratic, and Laissez-Faire

Decoding SSL, TLS, and HTTPS: A Comprehensive Explanation

Biraj Karki

About

Available for

Biraj Karki's blogs

How Big Tech Checks Your Username in Milliseconds ⚡: The Definitive Guide to Scalable System Design

Understanding Nginx: The Event-Driven Powerhouse Behind Scalable Web Servers

11 Key Data Structures We Use Every Day

Comparing Leadership Styles: Transformational, Servant, Autocratic, Democratic, and Laissez-Faire

Decoding SSL, TLS, and HTTPS: A Comprehensive Explanation

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Biraj Karki

About

Available for

Biraj Karki's blogs

How Big Tech Checks Your Username in Milliseconds ⚡: The Definitive Guide to Scalable System Design

Understanding Nginx: The Event-Driven Powerhouse Behind Scalable Web Servers

11 Key Data Structures We Use Every Day

Comparing Leadership Styles: Transformational, Servant, Autocratic, Democratic, and Laissez-Faire

Decoding SSL, TLS, and HTTPS: A Comprehensive Explanation