Exploring a weird HTTP issues

Posted on 2022-05-04 in Programmation

Today I'd like to explain how I tried to solve a weird HTTP issues that I found at work. I hope you will find the method and the trials I used the useful/interesting if/when you will encounter something similar.

The issue was this: I needed to dynamically generate …

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Create test environments in Kubernetes

Posted on 2022-02-20 in Programmation • Tagged with Devops, Kubernetes

Context and possible solutions

If you are working …

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Yarn workspaces and mono repos

Posted on 2022-02-06 in Programmation • Tagged with Devops, JavaScript

I currently work in a small startup with two other developers. We have three projects: an API written in Python with the Django web framework, a big React app and a website written with NextJS. All these project are in the same git repository. This allows us to easily share …

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Shutdown Kubernetes

Posted on 2022-01-30 in Programmation • Tagged with Devops, Kubernetes

It can be a good idea to shutdown part of your infrastructure when you don't need it. It will help you reduce costs and your environmental impact. It is however, not always easy to actually do it.

In this article, I'll talk here about how to shutdown a Kubernetes based …

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Testing the re-frame Clojure frontend framework

Posted on 2022-01-16 in Programmation • Tagged with JavaScript, Clojure

I wanted to test re-frame a Clojure framework for building user interfaces. It is built on top of Reagent a Clojure library to interface with React in ClojureScript. The main goal of this framework is to help you manage the state of your application. To do that, you need to …

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Testing the Svelte JS framework

Posted on 2022-01-03 in Programmation • Tagged with JavaScript

After hearing good things about the Svelte JS framework, I decided to give it a try. To test it, I did something very original: the classic TODO app. You can see a picture of the end result on the screenshot below.

The styled app

Here are my impressions after this tests:

  • Despite using …

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My take on GKE auto-pilot mode

Posted on 2021-10-17 in Programmation • Tagged with security, gcp, gke, kubernetes

I recently switched from a standard GKE cluster where I had to manage nodes to an autopilot one where Google does it for me. I must say the switch was easy to do (despite an interruption of our services) and greatly simplified the management of the cluster.

I noticed this …

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Generate PDF from React components

Posted on 2021-09-26 in Programmation • Tagged with JavaScript, React, Chrome, Puppeteer

How do you generate a PDF from any React components? I am not talking about just allowing your users to print a page into a PDF with their browser, I am talking about transforming a page as PDF programmatically and saving it server side. The idea is for our user …

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Build a sequence that is reset everyday

Posted on 2021-04-08 in Programmation • Tagged with Django, Python, PostgreSQL

How to create a database sequence that will be reset everyday? That is a sequence that will get one the first time of each day? It sounds easy but it's not that much.


This article will focus on PostgreSQL since it's the database I use. A similar solution may …

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Make JS code communicate with a ServiceWorker

Posted on 2020-08-18 in Programmation • Tagged with JavaScript, Web, ServiceWorker

If you need to send data from your JS code to your ServiceWorker, you can do it like this:

navigator.serviceWorker.register("./sw.js").then(registration => {
    registration.active.postMessage("Some message");

You can then rely on this code in the ServiceWorker to read the message:

self.addEventListener("message", event => {
    console …

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