Nicolas Mesa

Dad, husband, geek

SaaS Like Isolation in Django Rest Framework

Hi there! In this post, we talk about how to add SaaS-like isolation to a Django Rest Framework service without bringing in third-party libraries. First, let’s start with why? I wanted to learn how to use Django Rest Framework by building a small SaaS service. I started googling to see if there were any resources available. Most of them suggested to use a third-party library such as Django Organizations, Django tenant schemas or use DB namespaces, all of which are only compatible with Postgres. Read more →

How to Access Logged Objects in the Javascript Console

In this short post, we go through the process of making a console.logged Object available in Chrome’s javascript console. TLDR Right-click the Object you want to inspect and click Store as global variable. This creates a variable with name temp<n> where <n> is a number (starts from 1). Use the variable to access the Object. Explanation The Hack Version Sometimes when I’m debugging, I need to access an Object and its methods from the Javascript console. Read more →

How Does Traceroute Work

In this post, we take a look at how the traceroute command works. traceroute is a utility command that prints the route (or hops) that a packet takes to reach another host. We start with an example of traceroute. Then we go through what happened behind the scenes. Finally, we run the traceroute command one more time while sniffing the traffic with tcpdump. Traceroute example Let’s look at an example: Read more →

Serve Your Current Directory With Python and HTTP

This is going to be a short post showing how to run an HTTP server to serve your current working directory. TLDR For Python 3 run: python3 -m http.server For Python 2 run: python -m SimpleHTTPServer .bashrc alias: alias serve="python3 -m http.server" Explanation Sometimes at work, I’ve had the need to spin up a quick HTTP server to serve my current working directory. I usually need this for two use cases: Read more →

Container Creation Using Namespaces and Bash

A few weeks ago, I saw a great video explaining how Docker works under the hood (see video below). The video ends with a demo where Jérôme Petazzoni creates a container using nothing but bash. I found many of the commands that he used pretty cryptic, so I decided to explain what he did and the purpose of each command. Video (The demo starts around minute 41) Read more →