blog posts on jc's personal website

If you happen to find yourself in a sysadmin position, or a position where you just so happen to maintain someone’s infrastructure, chances are that at some point in time the topic “we need a cache” comes up.

If you enjoy using the command-line, chances are you’ve wanted to send e-mails from your command line at some point.

In my previous two posts I talked about rrdtool and about Munin.

After my previous post on Monitoring with Munin I want to shine some more light on the tool powering Munin, RRDtool.

The main go-to for monitoring seem to be using Prometheus and Grafana these days, and both are great at what they do.

What if you could enter somebody’s email, and if that person had a PGP key, your client would automatically choose it?

Let’s imagine the following story: You open a link to a website and you are greeted with a “we would like your permission for…” popup, if you’re very lucky, they may even have a way to decline it without clicking through menus, if you’re even luckier, the…

My main personal computer is a MacBook Air, specifically the “Early 2014” model.

If you have a large list of things in Elixir and then want to sort them in order to get the top n for something, chances are that your existing sort using Enum.sort may be relatively slow, as it rebuilds the entire list.

Updated 2026: Use Site.Params.Author instead of the deprecated Site.Author.

When this blog post goes live, my new e-mail setup is live.

If this post goes live, I have ported my blog to use Hugo.

Updated 2023-03-20: the “Recents” tab in Finder will also clear as a result of changing this.

Debian’s postgresql-common package supplies the pg_virtualenv tool, which spins up a PostgreSQL database which can be used for running tests that require a database, testing upgrades, and other purposes.

After seeing numerous Python web applications here and there, each with their own custom migrations framework(s), ORMs, view implementation, authentication, and unit testing standard, I have been led to formulate Christ’s First Rule of Programming: Any su…

Elixir has been my go-to language for fun side projects for a while now.

My MacBook Air had a 128 GB SD card to expand its storage for quite some time.

If you want to host a simple and lightweight git server along with a pretty web interface, Gitea is the way to go.

Recently I’ve gotten a new server and I wanted to move my blog on there.

After letting it sit there for a while, I figured that it’s time to brush up my website from the odd setup that I had on there.