In this post I’ll try to describe a simple solution, that I came up with, to solve the issue of dynamically updating DNS records when the IP addresses of your machines/instances changes frequently. While Dynamic DNS isn’t a new thing and many services/tools around the internet already provide solutions to this problem (for more than […]
Author: Gonçalo Valério
Software developer and owner of this blog. More in the "about" page.
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Security.txt
Some days ago while scrolling my mastodon‘s feed (for those who don’t know it is like Tweeter but instead of being a single website, the whole network is composed by many different entities that interact with each other), I found the following message: To server admins: It is a good practice to provide contact details, […]
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Django Friday Tips: Feature Flags
This time, as you can deduce from the title, I will address the topic of how to use feature flags on Django websites and applications. This is an incredible functionality to have, specially if you need to continuously roll new code to production environments that might not be ready to be released. But first what […]
Last January I made a small post about setting up a “Content-Security-Policy” header for this blog. On that post I described the steps I took to reach a final result, that I thought was good enough given the “threats” this website faces. This process usually isn’t hard If you develop the website’s software and have […]
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Django Friday Tips: Testing emails
I haven’t written one of these supposedly weekly posts with small Django tips for a while, but at least I always post them on Fridays. This time I gonna address how we can test emails with the tools that Django provides and more precisely how to check the attachments of those emails. The testing behavior […]
A couple of weeks ago, I gave a small talk on the Madeira Tech Meetup about a set of HTTP headers that could help website owners protect their assets and their users. The slides are available here, just in case you want to take a look. The content of the talk is basically a small […]
Sometimes I just need to look into the details of a PGP key that is provided in its “armored” form by some website (not everyone is publishing their keys to the keyservers). Normally I would have to import that key to my keyring or save it into a file and use gnupg to visualize it […]
First of all, DoH stands for “DNS over HTTPS”. So last week Mozilla announced that future versions of Firefox will use DoH by default, a decision that at first sight might seem innocuous or even good but thanks to some implementation details it ended up being very controversial. The reaction that followed the announcement on […]
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Rust examples and exercises
Learning to program in Rust is as easy like other languages out there, because it ends up having different constrains and new concepts that you will have to go through, in the beginning everybody fights the compiler at least a little bit. I started this journey a while ago, however I’ve been progressing slowly just […]
When going on a trip it is now common practice to consider staying on an rented apartment or house instead of an hotel or hostel, mostly thanks to AirBnB which made it really easy and convenient for both side of the deal. Most of the time the price is super competitive and I would say […]