System Design Codex

Key Concepts of Kafka

A high level view...

23 hrs ago • 

Saurabh Dashora

24

October 2025

Authorizing 10 Million API Calls Per Second

How LinkedIn Authorizes The Calls?

Oct 28 • 

Saurabh Dashora

24

3

How Paypal Built JunoDB?

A deep dive breakdown

Oct 21 • 

Saurabh Dashora

18

2

How Amazon Dynamo Works

The precursor to the highly popular DynamoDB

Oct 14 • 

Saurabh Dashora

31

2

Top Strategies for High Availability

Knowing about them can help you...

Oct 7 • 

Saurabh Dashora

25

2

September 2025

How Amazon S3 Works Behind the Scenes

It has many sub-components

Sep 30 • 

Saurabh Dashora

31

3

What All Can A Load Balancer Do?

One tool...many features

Sep 23 • 

Saurabh Dashora

29

5

Most Important Tips for System Design Interviews

These can help you during interviews.

Sep 16 • 

Saurabh Dashora

33

JWT versus PASETO

Two token-based authentication mechanisms

Sep 9 • 

Saurabh Dashora

26

2

Model Context Protocol 101

What is MCP?

Sep 2 • 

Saurabh Dashora

39

6

August 2025

How HTTPS Makes the Web Secure?

The Step-by-Step Working of HTTPS...

Aug 26 • 

Saurabh Dashora

40

5

A Quick Guide to RabbitMQ

How does it work?

Aug 19 • 

Saurabh Dashora

45

8