Archive - System Design, but Simple

Communication Protocols

HTTP, WebSockets, SSE, gRPC, REST, and GraphQL

19 hrs ago • Stephane Moreau

REST vs GraphQL

Explained as simply as possible… but not simpler.

Dec 22 • Stephane Moreau

HTTP Status Codes You Must Know

Explained as simply as possible… but not simpler.

Dec 15 • Stephane Moreau

Types of API Testing

Explained as simply as possible… but not simpler.

Dec 8 • Stephane Moreau

The Only 5 Diagramming Tools You Need for System Design

The tools I actually use (and recommend to my mentees)

Dec 1 • Stephane Moreau

November 2025

Read-Through vs Write-Through Cache

Explained as simply as possible… but not simpler.

Nov 24 • Stephane Moreau

What happens when you type a url in your browser?

Explained as simply as possible… but not simpler.

Nov 17 • Stephane Moreau

How to store passwords in your database

Explained as simply as possible… but not simpler.

Nov 10 • Stephane Moreau

How to choose between SQL and NoSQL

Explained as simply as possible… but not simpler.

Nov 3 • Stephane Moreau

October 2025

Authentication (Session Vs JWT)

Explained as simply as possible… but not simpler.

Oct 27 • Stephane Moreau

Every type of API you must know

Explained as simply as possible… but not simpler.

Oct 20 • Stephane Moreau

Design Leetcode

Like you should in an interview. Explained as simply as possible… but not simpler.

Oct 13 • Stephane Moreau

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