Why we need Queues - and what they do when no one is watching

System design fundamentals

20 hrs ago • 

Jakub Slys 🤖

16

1

Lead smarter in the age of AI

Why every leader needs an AI thinking partner — and how to build yours today

Oct 6 • 

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 and 

Joel Salinas

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September 2025

Supercharge your Substack: Build a personalized AI assistant in a few clicks 🚀🤖

Turn your latest posts and notes into new ideas with an AI sidekick powered by n8n and ChatGPT

Sep 24 • 

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30

7

Substack Notes Scheduler (JSON)

Save time, stay consistent, and let automation handle the posting for you!

Sep 23 • 

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9

How you can build Substack Notes scheduler with n8n

Save time, stay consistent, and let automation handle the posting for you!

Sep 15 • 

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86

36

From TinyURL to Bitly (and beyond): designing a smarter URL shortener

Principles and practice of system design

Sep 2 • 

Jakub Slys 🤖

20

4

August 2025

Space-Based Architecture

Software architecture

Aug 20 • 

Jakub Slys 🤖

14

3

Substack automation with n8n: how to publish Notes automatically 🚀

Step-by-step guide to using the Substack Node in n8n to create your first no-code workflow

Aug 15 • 

Jakub Slys 🤖

158

63

CPU Caches: Why tiny memory matters?

System design

Aug 6 • 

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17

2

July 2025

No official API⁉️ No problem‼️ How I reverse-engineered Substack API (and so can you)

You don’t need official docs to create real tools - just curiosity and patience

Jul 30 • 

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50

28

Sharding vs partitioning vs replication: Embrace the key differences

Databases and system design

Jul 25 • 

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14

Get Your Cert

💰 Knowledge pays 💰 Literally.

Jul 19 • 

Jakub Slys 🤖

14