Marco Pegoraro

ai
The Era of Self-Developing Apps
What if an app could start completely empty and evolve its own code over time? A Telegram bot, an Obsidian vault, and HAL walk into a bar — and build a self-extending system without a single database.
7 Oct 2026 · 14 min read
ai
Stop Prompting, Start Pairing: Securing a Live VPS with AI
Most people treat AI agents like magic wands and pray they don't break anything. We treated it like a junior engineer with superhuman memory. Here’s what happened when we hardened my live server together.
6 Oct 2026 · 11 min read
Books That Shaped My Life
You become what you read, So read what you want to become. Communication, Body Language, Personal Development, Biographies & more.
16 Dec 2025 · 1 min read
ai
50 FIRST TASKS
Code assistants forget stuff. Here's how to teach it not to. Boost Copilot, Cursor, and other assistants with a structured Memory Bank to make every task smarter, faster, and even more human.
13 Jul 2025 · 14 min read
ai
AI is Moving Fast. But Context Moves Slower.
AI automates tasks, but the real challenge isn’t execution—it’s gathering context. And much of that context lives outside IT systems, buried in human interactions, undocumented knowledge, and team dynamics. Until AI can bridge that gap, understanding remains a human advantage.
27 Feb 2025 · 3 min read
ai
Context Fuels Language Models
Just as machine learning algorithms rely on quality training data, large language models thrive on their given context.
31 Jan 2025 · 10 min read
postgres
PGMate, the client that rocks!
PGMate is a Docker-based Postgres client that focuses on Developer Experience and packs features inspired by Postman, NPM, VSCode. And AI. lots of AI.
12 Dec 2024 · 5 min read
ai
Mastering Swedish with AI
My Journey with ChatGPT as a Tailored Swedish Tutor I lived in Sweden for a decade and never truly mastered the language. I navigated daily life with...
31 May 2024 · 4 min read
ai
My first dive into AI
A collection of posts that tell my learning experience in ML/AI with Python, JupiterLAB, and OpenAI
14 Apr 2024 · 2 min read
ai
Embeddings and all the Black Magic
First steps with Embeddings and OpenAI: from API setup to a working Jupiter Notebook.
14 Apr 2024 · 3 min read
ai
My Docker-based AI/ML Training Environment
Dive into Docker, JupyterLab, and machine learning with 'learning-python'. Features Python 3.9, NodeJS, and PostgreSQL with pgvector. Start with make start at localhost:8888.
14 Apr 2024 · 2 min read
Docker
Ditching Docker Desktop
How we learned to run Docker natively and save 55k a year!
28 Feb 2024 · 3 min read
ai
AI Can't Fuck it Up!
AI skills scale fast, but human error births innovations like penicillin and X-ray. Our imperfections drive ingenuity, making us irreplaceably creative.
5 Nov 2023 · 4 min read
team
Rehearsed Remotely, Delivered Dramatically
See how we went from practicing online to rocking the stage in real life. We're a team spread out all over Europe, but we're coming together to show off the tech that will change how we work. Don't miss out!
4 Oct 2023 · 2 min read
book
Extreme Ownership
Owning Leadership with SEAL Precision - Book review
28 Jul 2023 · 1 min read
book
The Books that Shaped my Thoughts
The more you read, the more you grow. But the better you read, the faster you learn! Here is my list of books. Ideas that helped me grow.
28 Jul 2023 · 1 min read
book
Exactly What To Say
The Magic Words for Influence and Impact - book review
28 Jul 2023 · 2 min read
learning
Teaching SQL with ChatGPT
Explore how ChatGPT is transforming SQL learning. This AI doesn't replace database engineers, but serves as a powerful assistant that simplifies the creation of complex queries and data generation. Dive into the future of database education.
13 Jun 2023 · 6 min read
war stories
Scale it up, stupid!
Knowledge plays a paramount role in performance management, scalability of a system, and ultimately in regulating the costs of a product. In this story, I share a failure that pushed me to increase my knowledge.
2 Feb 2023 · 8 min read
architecture
Put the logic back in the DB!
How to choose between DB-centric or horizontally scalable applications? This article explores the components of this choice, provides examples, and a practical checklist to answer this question.
29 Dec 2022 · 7 min read
chatgpt
Pair programming with ChatGPT
I had a natural and practical pair programming experience with ChatGPT. I'm excited and shocked at the same time. Is this going to replace me?
25 Dec 2022 · 3 min read
architecture
Micro-Domain Architecture
A Micro-Domain Architecture is an organization of People and Tech that aim to keep under control the amount of information that must be exchanged between different parties, and parallelize workstreams.
28 May 2022 · 17 min read
Communication
War doesn't determine who is Right, only who is Left
Winning an argument or a debate is a matter of communication skills rather than owning the truth. I'm gradually learning this truth as I genuinely excel in being right while being perceived as wrong.
28 Feb 2022 · 5 min read
ForrestJS
Thy Shall NOT Burn in the Context Provider HELL
How to structure your React PWA to achieve loose coupling of features and avoid the Context Provider Hell
31 Jan 2022 · 6 min read
my story
Honor Thy Father and Thy Mother
How does your family react to your AFib management lifestyle? Here is my story.
11 Jan 2022 · 4 min read
my story
A Far Death Experience
Near-Death Experiences allegedly give us a peek into the Great Beyond, but you don't always need to die to steer your Life clear from the rocks.
8 Jan 2022 · 7 min read
Metabolic Health
Outrun the Lion
You have to take care of your body if you want to outrun the lion! Proper training saves your life and improves its quality.
2 Dec 2021 · 5 min read
Leadership
The One Secret to Leadership
The one secret is to step aside and ask your team the "what question" so to guide them to a solution that you believe in.
1 Dec 2021 · 3 min read
my story
A Country Race to Diagnose Atrial Fibrillation
In this story, I’m going to tell you my experience with the healthcare system of the 3 countries: Sweden, Denmark, and Italy.
29 Nov 2021 · 5 min read
my story
The Apple Watch got it first!
The first diagnosis of Atrial Fibrillation came from my Apple Watch. And my cardiologist took that into serious consideration.
29 Nov 2021 · 2 min read
my story
AFib, Early Symptoms
The first signs, my worries, and how I got to pay full attention to my Atrial Fibrillation.
18 Nov 2021 · 2 min read
my story
The Danish Doctor
This is how I got my AFib diagnosis in Denmark thanks to my company's private healthcare insurance. Part of the series: A Country's Race to Diagnose.
18 Nov 2021 · 3 min read
my story
The Swedish Struggle
Sweden is the country I live in. I sought help here but I received nothing so far. Here is my testify to a nightmarish healthcare experience.
17 Nov 2021 · 4 min read
my story
The Italian Job
This is how I got my AFib diagnosis in Italy. Part of the series: A Country's Race to Diagnose.
17 Nov 2021 · 3 min read
my story
It’s all about my Lucky Star
Sometimes, it's just too easy to give in to sadness and anger. But it is also possible to look at the bright side, as Monty Python used to sing!
13 Nov 2021 · 4 min read
my story
More Than a Feeling
This is how I feel when Atrial Fibrillation strikes, and what I'm learning from it.
11 Nov 2021 · 7 min read
my story
The Last One
Do you want to live happily ever after? You have to steer clear of sugar and start going to the gym. Said the doctor.
11 Nov 2021 · 5 min read
Quotes
The risk I took was calculated...
But man, am I bad at math.
6 Nov 2021 · 1 min read
Communication
You Can Learn From Anyone
You never know about the stuff that you don't know, and you never know what another guy knows. So it is better to keep an open mind about it.
5 Nov 2021 · 5 min read
Import 2022-12-03 12:45
Cookies Policy
Cookie Policy for MarcoPeg.com This is the Cookie Policy for Ghost Pi, accessible from https://marcopeg.com. What Are Cookies As is common practic...
4 Nov 2021 · 4 min read
Import 2022-12-03 12:45
Projects
I like to start new project. No, I LOVE to start new projects. Starting new projects give me the opportunity to go deep into one single subject and le...
3 Nov 2021 · 2 min read
Import 2022-12-03 12:45
About Me
I was born to fly planes, luckily I'm a darn good web engineer!
3 Nov 2021 · 3 min read
Communication
Speak Your Customer's Language
This is part of a series of good lessons that my dad tried to give me when I was young. Of course, I didn't get it for the best part of my life. But it is better late than never, right?
12 Apr 2021 · 4 min read
Quotes
Everything not saved will be lost
Nintendo "Quit Screen" message.
6 Apr 2021 · 1 min read
postgres
Event Sourcing in Postgres: The Client
How to store different client's reading cursor in PostgreSQL, so to facilitate consuming an event stream by different consumers.
26 Mar 2021 · 3 min read
Quotes
Strong people don't put others down
They lift them up - Darth Vader (philantropist)
20 Jan 2021 · 1 min read
postgres
Event Sourcing in Postgres: The Events
How to build a basic data model for Event Sourcing in PostgreSQL, and let multiple clients consume one or more topics.
11 Jan 2021 · 3 min read
postgres
Event Sourcing in Postgres
How to build an Event Sourcing system using one of the best data-store tools available to humankind: Postgres!
13 Dec 2020 · 1 min read
Tips & Tricks
JavaScript: the Good Parts in 2020
This is a personal list of the stuff that I like about JavaScript and that I believe should be used today.
27 Oct 2020 · 18 min read
Tutorials
ForrestJS & Fastify Examples
Learn by examples how easy is to build a Fastify based Web Service with ForrestJS and its feature composability.
6 Aug 2020 · 2 min read
FetchQ
FetchqCRON
Executing repeatable jobs is at the core of most IT projects. From following up a few days after a user signs up, to repetitive cleaning or caching procedures. FetchqCRON provides time-based execution as a service, on Heroku or on-premise via Docker. FOR FREE.
31 Mar 2020 · 3 min read
Tutorials
Hasura in Gitpod
How to run Hasura.io in a GitPod.io workspace
9 Feb 2020 · 3 min read
FetchQ
FetchQ - An Introduction
Two years ago, I was working on a web-scraper with my startup Mysocial.io and we needed to distribute work across multiple servers while achieving uniqueness in the system. We were handling hundreds of millions of tasks and FetchQ is the result of that effort.
20 Jan 2020 · 8 min read
Tutorials
How to integrate Hasura with Auth0
Step by step guide on how to use Auth0 with Hasura in a Single Page App bootstrapped with Create React App.
26 Dec 2019 · 11 min read
postgres
Setup a Free PostgreSQL Database
Do you want to learn Postgres? Today you can spin up your database completely for FREE and start experimenting with one of the best database tools ever.
1 Dec 2019 · 2 min read
Tips & Tricks
Online IDEs for Learning how to Code
This is the best possible time to become a developer. Follow me and learn how to use FREE ONLINE RESOURCES to build a full-stack app that persists data in Postgres, exposes REST APIs with Fastify, and a sleek frontend with React and Ionic Framework.
27 Nov 2019 · 2 min read
tools
Gitbook Plugins
Last weekend I've been working on some plugins for GitBook. Here is the list!
10 Sept 2019 · 2 min read
postgres
Per-User Encryption with Postgres
In this article you learn how to apply per-user encryption to the data you store in Postgres. It is quite easy and it will allow you to guarantee the highest level of security and privacy to your users.
15 Jul 2019 · 8 min read
ForrestJS
Hooks - A truly modular NodeJS App
How to create a truly modular NodeJS App where your business values are organized in features and all the necessary infrastructure comes from NPM modules.
24 May 2019 · 5 min read
Tips & Tricks
How to run Postgres for testing in Docker
Running E2E integration tests often require your Postgres to be up and running, here are few tricks and suggestions how to do just that.
21 May 2019 · 2 min read
Communication
How to Win Friends and Influence People
This book opened my eyes and helped me building up new relationships after my first marriage ended. You will get a list of simple principles to deal with people.
8 Apr 2019 · 4 min read
Communication
Never interrupt your enemy when he is making a mistake
... said Napoleon, and it took 38 years for me to understand it
7 Apr 2019 · 3 min read
free
A 100% Free Website with Gatsby and Gitpod.io
Yes, I am working and hosting this website 100% for free thanks to GatsbyJS and Gitpod.io - here is how you can do the same
1 Apr 2019 · 6 min read
Tips & Tricks
How to keep your server clean of clutter with Docker Vacuum
Do you need a smart tool to clean up Docker images after a new deployment? Maybe DOCKER SYSTEM PRUNE is not always enough? Read on!
26 Mar 2019 · 4 min read
project
Coding The Stuffer
How comes when I need a specific service, I never find one ready?
22 Feb 2019 · 5 min read
Tips & Tricks
AWS S3 File Names - Troubleshooting
How to delete S3 files that contains spaces or non ASCII characters
20 Feb 2019 · 1 min read
Tips & Tricks
Docker Compose Healthcheck
How to monitor containers' status and create a deterministic boot order for your services.
18 Feb 2019 · 3 min read
Tips & Tricks
Gatsby Begins
And so I tried out Gatsby and promptly decided to turn my WordPress-based blog into a static generated website.
9 Feb 2019 · 2 min read
organization
Best Practices for a Good Team Experience
A few tricks I've learned that make collaboration easier.
18 May 2018 · 5 min read
aws
Optional Parameter in AWS CloudFormation Stack YAML
The following YAML CloudFormation stack creates an EBS volume returning its reference for further usage in a higher level template. I’ve chosen to us...
25 Mar 2018 · 1 min read
postgres
Make it Parallel
How to run consume a queue with multiple independent workers in Postgres, and survive!
1 Feb 2018 · 8 min read
Tips & Tricks
How to optimize Postgres for SELECT COUNT(*) on massive tables
How to (slightly) optimize SELECT COUNT(*) performance on PostgreSQL using partial indexes.
2 Dec 2017 · 4 min read
Tips & Tricks
WP Admin proxy for NGINX
How to proxy wp-admin in a headless WordPress setup.
18 Aug 2017 · 1 min read
Import 2022-12-03 12:45
Apple - Security for travelers sucks
Did you know that you can't print any recovery code for your AppleID account? The more you protect it, the more is likely you lose control over it. And do you travel a lot? Then you'd better read this!
5 Apr 2017 · 3 min read
Tips & Tricks
WordPress on Thin Air
How to squeeze WordPress/MySql to the bare minimum memory consumption, and survive.
29 Mar 2017 · 6 min read
Tips & Tricks
Docker Stats with Containers Names
There is a way to get container's names out of `docker stats`, and Docker Humble makes it ridicolously easy for you.
8 Feb 2017 · 1 min read
experience
What is it like to be a Junior Developer?
It's the magic moment in which you realise you can use your knowledge to make some money.
24 Nov 2016 · 11 min read
Tips & Tricks
Dockerized MySQL Crashes a Lot!
Have you ever experienced a dockerized MySQL to stuck in low memory VPS? I did and luckily I found a solution! (yes, I googled it)"
13 Nov 2016 · 8 min read
experience
The Holy Grail of Code Sharing
Codesharing is a concept that is whispered in a low tone around the office, is being shouted loud by tools producers, and is simply misunderstood by the great part of us, IT folks.
27 Feb 2015 · 9 min read
data
Sleep tight and have a happy Life!
Backups are strange animals. In a perfect world you don’t need backups. You put efforts in building a solid backup strategy, you buy external drives, cloud storage and amazing software which you wish you never have to use in life.
15 Jan 2015 · 6 min read
experience
You'd better Test to save some Rest
Since the day I became a developer, I've always feared the "Big What The Fuck".
14 Jan 2015 · 6 min read
Communication
The Curse of the Proud Developer
When bad things happen on a Friday night, you ought to face your fears, seek help with your team, and work together to get to the beer you deserve!
12 Jan 2015 · 3 min read

The Era of Self-Developing Apps

Stop Prompting, Start Pairing: Securing a Live VPS with AI

Books That Shaped My Life

50 FIRST TASKS

AI is Moving Fast. But Context Moves Slower.

Context Fuels Language Models

PGMate, the client that rocks!

Mastering Swedish with AI

My first dive into AI

Embeddings and all the Black Magic

My Docker-based AI/ML Training Environment

Ditching Docker Desktop

AI Can't Fuck it Up!

Rehearsed Remotely, Delivered Dramatically

Extreme Ownership

The Books that Shaped my Thoughts

Exactly What To Say

Teaching SQL with ChatGPT

Scale it up, stupid!

Put the logic back in the DB!

Pair programming with ChatGPT

Micro-Domain Architecture

War doesn't determine who is Right, only who is Left

Thy Shall NOT Burn in the Context Provider HELL

Honor Thy Father and Thy Mother

A Far Death Experience

Outrun the Lion

The One Secret to Leadership

A Country Race to Diagnose Atrial Fibrillation

The Apple Watch got it first!

AFib, Early Symptoms

The Danish Doctor

The Swedish Struggle

The Italian Job

It’s all about my Lucky Star

More Than a Feeling

The Last One

The risk I took was calculated...

You Can Learn From Anyone

Cookies Policy

Projects

About Me

Speak Your Customer's Language

Everything not saved will be lost

Event Sourcing in Postgres: The Client

Strong people don't put others down

Event Sourcing in Postgres: The Events

Event Sourcing in Postgres

JavaScript: the Good Parts in 2020

ForrestJS & Fastify Examples

FetchqCRON

Hasura in Gitpod

FetchQ - An Introduction

How to integrate Hasura with Auth0

Setup a Free PostgreSQL Database

Online IDEs for Learning how to Code

Gitbook Plugins

Per-User Encryption with Postgres

Hooks - A truly modular NodeJS App

How to run Postgres for testing in Docker

How to Win Friends and Influence People

Never interrupt your enemy when he is making a mistake

A 100% Free Website with Gatsby and Gitpod.io

How to keep your server clean of clutter with Docker Vacuum

Coding The Stuffer

AWS S3 File Names - Troubleshooting

Docker Compose Healthcheck

Gatsby Begins

Best Practices for a Good Team Experience

Optional Parameter in AWS CloudFormation Stack YAML

Make it Parallel

How to optimize Postgres for SELECT COUNT(*) on massive tables

WP Admin proxy for NGINX

Apple - Security for travelers sucks

WordPress on Thin Air

Docker Stats with Containers Names

What is it like to be a Junior Developer?

Dockerized MySQL Crashes a Lot!

The Holy Grail of Code Sharing

Sleep tight and have a happy Life!