Development on Quentin Rousseau

Your Small PR Rule Won't Survive AI

Tue, 19 May 2026 08:00:00 +0000

For two years, we enforced a strict small-PR culture at Rootly . Stacked PRs, atomic changes, never more than a couple hundred lines. The logic was sound: smaller diffs are easier to review, easier to revert, easier to reason about.

Then AI started writing most of our code.

One More Prompt: The Dopamine Trap of Agentic Coding

Mon, 09 Mar 2026 14:00:00 +0000

It’s 2:47 AM on a Tuesday. I’m not debugging a production outage. There’s no deadline. I’m just watching Claude Code refactor a module — and I can’t stop. One more prompt. One more agent run. One more hit.

If this sounds familiar, you’re not alone. Something strange is happening to developers in 2026: AI coding tools may be triggering the same dopamine loops as slot machines, and the tech industry is sleepwalking into it.

From Writing Code to Orchestrating Agents

Mon, 09 Mar 2026 08:47:29 +0000

My dev workflow has changed more in early 2026 than in the previous five years. I went from writing code in VS Code, to pair-programming with AI in Cursor, to running CLI agents like Claude Code and Codex — and now I’m orchestrating multiple agents working in parallel on different tasks at the same time.

Each step felt like a leap. But the jump to multi-agent orchestration is the one that fundamentally changed how I think about shipping software.

Your AI Agent Doesn’t Need an MCP Server — It Needs a Good CLI

Tue, 24 Feb 2026 23:27:05 +0000

Every week, a new MCP server shows up on GitHub that wraps a CLI tool that already existed. MCP server for GitHub? gh has been doing that since 2020. MCP server for AWS? The aws CLI covers 200+ services with --output json. MCP server for Datadog? They shipped a CLI instead — and it works better.

I get the excitement around MCP (Model Context Protocol). It’s a clean standard for connecting AI to external systems. Anthropic designed it well. But somewhere along the way, the community started treating MCP as the default way to give AI agents access to tools — even when a perfectly good CLI already exists.

From "Maintainers Wanted" to Three Major Releases in a Weekend

Tue, 24 Feb 2026 22:42:22 +0000

I have 50+ public repositories on GitHub. Some of them haven’t been touched in years. A few still get stars and forks weekly. Most sit somewhere in between — not abandoned, not active, just… there.

Until recently, that “just there” state came with guilt. Every Dependabot PR I didn’t merge, every issue I didn’t respond to, every README that still referenced a deprecated API — it all felt like debt accumulating. Maintaining open-source repositories was a second job I never signed up for.

Back Online: From Octopress to Hugo, From Silence to AI

Tue, 17 Feb 2026 23:32:48 +0000

My last blog post was in February 2017. Nine years ago.

It wasn’t intentional. I didn’t wake up one day and decide to stop writing. I just… didn’t start the next post. Then a month passed, then a year, then almost a decade. The classic // TODO: write blog post that never gets resolved.

What happened

Life happened — and it was a busy one.

When I wrote that last post about PgBouncerHero in 2017, I was at Instacart as one of their early SREs, building the infrastructure that took the platform from thousands of orders a week to millions.

PgBouncerHero - Dashboard for your PgBouncers

Mon, 06 Feb 2017 10:00:00 -0700

Purpose

PgBouncer is a Lightweight connection pooler for PostgreSQL.

We love PgBouncer at Instacart and we wanted to an easy way to get some information from the special administration database for all our bouncers in a centralized interface.

Quiptree - Browser extension to display Quip folders and files in tree format

Thu, 18 Jun 2015 10:00:00 -0700

Purpose

Quip allows you to create files and collaborate with you coworkers to take notes or build some documentation.

We love Quip at Instacart but it’s not so easy to browse folders and files.

Create a ruby pseudo terminal (PTY) and invoke an interactive command (SFTP)

Sun, 29 Mar 2015 22:37:51 -0700

Purpose

I needed to upload files on a SFTP server programmatically and automatically in a RoR Enviroment. SFTP ruby library wrapper are very limited (I only found this one actually) and is in maintenance (not more maintained) and I had some troubles uploading large files.

Simple Node.js wrapper and CLI for Synology DSM REST API

Thu, 12 Feb 2015 16:54:19 +0100

Purpose

JimRobs developped a cool Node.js wrapper for the Synology DSM REST API but no Command Line Tool was available.

Level up ionicons-iOS with a category

Sat, 25 Oct 2014 00:02:54 -0700

Purpose

Ionicons is a cool icon font framework (100% free and open source) designed by Ionic Framework .

Export all Mixpanel People to a JSON file

Tue, 15 Jul 2014 13:32:01 -0700

Purpose

I needed to backup all my people data available in Mixpanel to a JSON file via the Mixpanel Export API .

Backup Neo4j Database to AWS S3

Fri, 11 Jul 2014 14:05:00 -0700

Update (2014-07-28)

I got some issues using tar with big folder size. I fixed it by using using 7zip using LZMA2 compression algorithm instead LZO .

Real-time Logging for IronWorker with Logentries

Tue, 27 May 2014 23:15:42 -0700

Purpose

When you a executing a job with Iron Worker Service and writing logs on STDOUT you have to wait that the job is terminated to read the log file. Not very convenient if want to see your logs in real time right ?

Adding scopes to ActiveRecord::Base

Wed, 23 Apr 2014 19:00:08 -0800

Purpose

If you are using many times created_at and updated_at attributes and you’re playing a lot with them in you queries, you should be interesting by this MonkeyPatch who is adding useful scopes in every models who inherits from ActiveRecord::Base.

MonkeyPatch

Create app/initializer/active_record_scopes_extension.rb file and add the code below.
Call MyModel.created(DateTime.now) or MyModel.updated(3.days.ago) or MyModel.created(2.day.ago, 1.day.ago).

 
 

 

 RUBY
 

 
 
 
module Scopes
 def self.included(base)
 base.class_eval do
 def self.created(date_start, date_end = nil)
 if date_start && date_end
 scoped(:conditions => ["#{table_name}.created_at >= ? AND #{table_name}.created_at <= ?", date_start, date_end])
 elsif date_start
 scoped(:conditions => ["#{table_name}.created_at >= ?", date_start])
 end
 end
 def self.updated(date_start, date_end = nil)
 if date_start && date_end
 scoped(:conditions => ["#{table_name}.updated_at >= ? AND #{table_name}.updated_at <= ?", date_start, date_end])
 elsif date_start
 scoped(:conditions => ["#{table_name}.updated_at >= ?", date_start])
 end
 end
 end
 end
end

ActiveRecord::Base.send(:include, Scopes)

 Click to expand and view more
 

How to patch CVE-2014-0160 in OpenSSL

Mon, 07 Apr 2014 17:22:00 -0800

OpenSSL has a critical security vulnerability that needs to be patched right away.

This bug in OpenSSL has been found affecting versions 1.0.1 through 1.0.1f (inclusive) and 1.0.2-beta.

Upgrading OpenSSL version to 1.0.1g is fixing this security vulnerability.

Below the single command line to compiling and install the last openssl version.

PLAINTEXT

curl https://www.openssl.org/source/openssl-1.0.1g.tar.gz | tar xz && cd openssl-1.0.1g && sudo ./config && sudo make && sudo make install

 Click to expand and view more

Replace old openssl binary file by the new one via a symlink.

 
 SH
 
sudo ln -sf /usr/local/ssl/bin/openssl `which openssl`

 Click to expand and view more

You are all good !

 
 SH
 
# openssl version should return
openssl version
OpenSSL 1.0.1g 7 Apr 2014

 Click to expand and view more

Notes

This is not fixing Nginx and Apache server who have to be recompile with 1.0.1g openSSL sources.

Delete all your remote git tags in a row

Tue, 04 Feb 2014 19:41:53 -0800

Today i will introduce a simple command line to delete all your remote git tags.

Note1: Only OSX System tested.
Note2: You will probably need to download and install the Apple Developer Tools .

##Command line

git ls-remote --tags | awk '{print $2}' | xargs -n1 git push --delete origin

Twitter mention to url convertor plugin for Octopress

Mon, 06 Jan 2014 23:28:42 -0800

Today i needed to convert a string like "Hello world @quentinrousseau" to an html string like with the Twitter mention decoded with a real link for Octopress.

There is a gem called twitter_text who is already doing this stuff available here : https://github.com/twitter/twitter-text-rb .

Migration from WordPress to Octopress

Mon, 23 Dec 2013 21:26:23 -0800

Yes i did it !

It was a long time that i was looking for another solution for hosting this blog.

This blog is now running with Octopress (Based on Jekyll Engine), and still powered by Nginx.

Using TTTAttributedLabel with Regex : Welcome TTTRegexAttributedLabel

Fri, 15 Nov 2013 02:03:37 +0000

Hi there !

If you are looking a easy library to use to apply Regex with **TTTAttributedLabel **from Mattt Thompson , i build a lib called TTTRegexAttributedLabel .

Custom iOS7 UIAlertView

Fri, 01 Nov 2013 17:11:50 +0000

I forked « ios-custom-alertview » from @wimagguc and added a different design button this week.

You can just grab the open source code from Github now .

Activity transition animations like the Vine Android application.

Wed, 26 Jun 2013 13:05:09 +0000

Today, i will introduce you a cool activity transition animation which you could find in the last Vine app available on Android.

To clarify things, some screenshots of this animation.

Screenshots

Animations XML

Opening transition animations.

Translate from right to left animation for the new activity (activity_open_translate.xml)

 
 XML
 
<?xml version="1.0" encoding="utf-8"?>
 
<set xmlns:android="https://schemas.android.com/apk/res/android">
 
 <translate android:fromXDelta="100%"
 android:toXDelta="0%"
 android:duration="@android:integer/config_mediumAnimTime" />
 
</set>

 Click to expand and view more

A simple translate animation from right to left with a duration.****

Scale down animation for the old activity (activity_close_scale.xml)

 
 XML
 
<?xml version="1.0" encoding="utf-8"?>
 
<set xmlns:android="https://schemas.android.com/apk/res/android">
 
 <scale android:fromXScale="100%p"
 android:toXScale="80%p"
 android:fromYScale="100%p"
 android:toYScale="80%p"
 android:pivotX="50%p"
 android:pivotY="50%p"
 android:duration="@android:integer/config_mediumAnimTime" />
 
 <alpha android:fromAlpha="1"
 android:toAlpha="0.5"
 android:duration="@android:integer/config_mediumAnimTime"/>
 
</set>

 Click to expand and view more

A scale down animation from 100% to 80% with a pivot point from the center of the activity, an alpha opacity to from 1.0 to 0.5 and a duration.

Closing transition animations

Scale up animation for the new activity (activity_open_scale.xml)

 
 XML
 
<?xml version="1.0" encoding="utf-8"?>
 
<set xmlns:android="https://schemas.android.com/apk/res/android">
 
 <scale android:fromXScale="80%p"
 android:toXScale="100%p"
 android:fromYScale="80%p"
 android:toYScale="100%p"
 android:pivotX="50%p"
 android:pivotY="50%p"
 android:duration="@android:integer/config_mediumAnimTime" />
 
 <alpha android:fromAlpha="0.5"
 android:toAlpha="1.0"
 android:duration="@android:integer/config_mediumAnimTime"/>
 
</set>

 Click to expand and view more

A scale down animation from 80% to 100% with a pivot point from the center of the activity, an alpha opacity to from 0.5 to 1.0 and a duration.

Translate from left to right animation for the old activity (activity_close_translate.xml)

 
 XML
 
<?xml version="1.0" encoding="utf-8"?>
 
<set xmlns:android="https://schemas.android.com/apk/res/android">
 
 <translate android:fromXDelta="0%"
 android:toXDelta="100%"
 android:duration="@android:integer/config_mediumAnimTime" />
 
</set>

 Click to expand and view more

A simple translate animation from left to right with a duration.

Activity integration

In your new activity open :

Mac OS X widget for airbrake.io API.

Thu, 04 Apr 2013 16:35:34 +0000

Airbrake collects errors generated by other applications, and aggregates the results for developer review.

Through their API, i developed a Mac OS X widget. Just inform your subdomain, API key, Refresh Interval and you’re ready to go! https://github.com/kwent/airbrake-widget

Onefeat Startup experience | Let's go !

Wed, 18 Jul 2012 11:45:26 +0000

Introduction

I postulate to a job few months ago via a Korben retweet https://remixjobs.com/emploi/Developpement/URGENT-Developpeur-iOS-et-ou-Ruby-Fun-social-gaming-H-F/12950

The job was very attractive and the concept amazing. It’s talking about turn your life into an adventure by uploading pictures to complete some missions.

And now ?

After a 6 months accelelaror program in Paris (Le Camping ) and 3 months in San Francisco (I/O Ventures ), they’re back in Paris.

Windows Management Instrumentation (WMI) Linux Client

Wed, 18 Jul 2012 11:45:26 +0000

Context

I would like query WMI interface to get logical disks spaces from differents windows clients.

But WMI is** not natively** supported in Linux, so Samba & Zenoss Team worked hard to build a WMI client !

Following parts were tested on a** GNU/Linux Red Hat el6 x86_64**.

Installation

You could find RPM called « wmic » for (WMI Client) at https://rpmfind.net/linux/rpm2html/search.php?query=wmic&submit=Search

How to install Microsoft® SQL Server® ODBC Driver 1.0 for Linux

Thu, 12 Jul 2012 15:10:37 +0000

Hello,

This manipulation was tested on Linux RedHat EL 5/6 x86_64

1 | Download sqlncli for Linux

Download sqlncli on the official Microsoft website : https://www.microsoft.com/en-us/download/details.aspx?id=28160

2 | Unzip and download unixODBC-2.3.0

 
 BASH
 
tar xvzf sqlcli-11.0.1790.0.tar.gz && cd sqlcli-11.0.1790.0

./build_dm.sh #Script to download unixODBC-2.3.0, configure and compile it.

#Get into the tempory folder where unixODBC-2.3.0 was compiled and execute make install

#Before you install the driver, you may run a verify step to check if your computer has the required software to support the Microsoft SQL Server ODBC Driver 1.0 for Linux:

./install.sh verify

#When you are ready to install the Microsoft SQL Server ODBC Driver 1.0 for Linux, run the install script:

./install.sh install

 Click to expand and view more

2.bis | Unzip and download unixODBC-2.3.1 [hack]

UnixODBC-2.3.1 is available at ftp://ftp.unixodbc.org/pub/unixODBC/unixODBC-2.3.1.tar.gz but actually not supported by Microsoft sqlncli install scripts.

Save time and energy with UML diagram generator tools online !

Mon, 30 Apr 2012 10:55:05 +0000

Introduction

During a software architecture report redaction, i was confronted to a major problem : I would generated some UML diagrams as « Use Case », « Class Diagram » and « Activity Diagram » but i didn’t have tools as Microsoft Office Visio or equivalent installed on my laptop. So i searched web tools to generate these diagrams easily.

What i found ?

First website i found was Web Sequence Diagram: [www.websequencediagrams.com][1]
Second website i found was yUML: [yuml.me][2]
Third website i found was KangaModeling: [kangamodeling.org][3]

Thumbnail me 3.0 Released

Mon, 12 Mar 2012 12:54:14 +0000

For those who do not know Thumbnail me, please follow this link .

After more than** 9 months of development** between Beta version and Release version, Thumbnail me 3.0 is now available at www.thumbnailme.com .

PhotoCatch | Déclenchement automatisé d'un appareil photo D90 à partir d'un capteur de mouvements et d'un Arduino

Mon, 30 Jan 2012 09:21:03 +0000

Dans mon dernier post, je parlais de notre réalisation lors du FabLab à savoir :

Un appareil photo avec déclenchement automatisé via un capteur de mouvement et un arduino.

Aujourd’hui, je vais détailler le montage de cette réalisation.

Le matériel

 
 PLAIN
 
Un boîtier NIKON D90
Une télécommande filaire premier prix (Disponible [ici][1])
Un arduino uno
Un servomoteur
Un capteur ultrasons
Une breadboard
Quatres afficheurs 7 segments
Une touche de talent

 Click to expand and view more

PhotoCatch - Etape par étape

Obfusquer votre adresse mail et échapper aux SPAM

Tue, 09 Aug 2011 18:32:20 +0000

Il nous arrive bien souvent de devoir renseigner notre @mail au sein d’une page web.
Seulement il est essentiel de prendre des précautions sur la manière de la renseigner face au SPAM.
En effet, une @mail renseignée en simple texte est facilement détectable par un robot (via une simple expression régulière par exemple) et en moins de quelques secondes, vous voilà inscrit sur une liste de SPAM contre votre volonté.

Thumbnail me - Vignettez à l'infini !

Mon, 01 Aug 2011 09:55:58 +0000

Bon je commence avec mon plus gros succès: Thumbnail me.

Kesako?

Thumbnail me est un logiciel qui permet de générer des vignettes à partir d’un film.

Une petite panoplie de paramètre est personnalisable tel que** le nombre de colonnes** ou** le nombre de lignes** que vous souhaitez dans votre vignette. On peut également modifier les couleurs et les polices selon les préférences de l’utilisateur. On trouvera également un mode de traitement par lot (Batchmod) et une fonction d’upload direct.