Today I Learned

Animal well does not let you remap keys, and really doesn’t even inform you that it is keyboard compatible. I had to play around and discover the keymap, which can be a bit tricky on a 40% board. This is what I found.

I recently discovered pydantic-sqlite by Phil997, and it’s truly impressive.

Simple package for storing pydantic BaseModels in an in-memory SQLite database.

I recently started seeing email-decode.min.js show up on my blog posts, and I wondered what the heck ? I didn’t put it there. Turns out that cloudflare put it there from pages to safely serve email addresses for me.

inspecting the page without js running we can see that the mailto email is swapped out for email protected. Neat feature.

❯ curl --silent https://waylonwalker.com/diskcache-as-debounce/ | grep email <a class="decoration-pink-500 hover:decoration-pink-300 hover:text-pink-100" href="/cdn-cgi/l/email-protection#a4ccc1c8c8cbe4d3c5ddc8cbcad3c5c8cfc1d68ac7cbc9" rel="me"><span class="__cf_email__" data-cfemail="630b060f0f0c2314021a0f0c0d14020f0806114d000c0e">[email&#160;protected]</span></a> <script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>

Looking deeper into this article it looks like this feature comes from Scrape Shield and enabling Email Address Obfuscation.

fastapi comes with a concept of background tasks which are functions that can be ran in the background after a function has been ran. This is handy for longer running functions that may take some time and you want to have fast response times.

Here is an example from the docs

markdown it py running in rust claims to be 20x faster. I’ll definitely look into this if markdown it py is ever a bottleneck in my performance. At first glance it appears that plugins are written in rust not python, and there is no admonition plugin, so I’ll keep my eye on it for now, but I can’t use it.

diskcache has a peekitem method that allows you to lookup the expire_time of a cached item without changing it. I recently used this to implement debounce for fastapi background tasks with multiple workers running. since all the workers I care about are on the same machine, but running in different processes diskcache was a great option. All workers have access to the same disk, but not the same variables in memory.

Great intro into kustomize. This helped me get started with kustomize.

I’ve been using fastapi more and more lately and one feature I just started using is background tasks [[ thoughts-333 ]].

I am using it for longer running tasks and I don’t want to give users the ability to spam these long running tasks with many duplicates running at the same time. And each fastapi worker will be running in a different process so I cannot keep track of work in memory, I have to do it in a distributed fashion. Since they are all running on the same machine with access to the same disk, diskcache is a good choice

My brain first went to thinking I needed another service like redis running alongside fastapi for this, then it hit me that I can use diskcache.

Here is how I used diskcache to debounce taking screenshots for a unique shot every 60 seconds.

I’m really excited about homelab-diagrams, an amazing project by Doomlab7. It’s worth exploring!

A repository to house diagrams for my homelab

learn-pdm by pypeaday is a game-changer in its space. Excited to see how it evolves.

A repository for learning and playing with the pdm package manager/system for python

If you’re into interesting projects, don’t miss out on zmk-config-fourpad, created by wyattbubbylee.

my fourpad keybord

Yesterday I realized that I have overlooked the default installation method of the sealed secrets controller for kubernetes kubeseal this whole time an jumped straight to the helm section. I spun up a quick kind cluster and had it up quickly. I can’t say this is any better or worse than helm as I have never needed to customize the install. According to the docs you can customize it with [[ kustomize ]] or helm.

I like rothgar’s project bashScheduler.

Kubernetes scheduler written in less than 100 lines of bash 😬 😆

Huge list of micro controllers tried and used in keeb builds.

I’m impressed by nrfmicro from joric.

A Pro Micro alternative for wireless keyboards

Not gonna lie, kinda pumped about this one. I manually did one, jotted down the coordinates, opened the gcode in vim, added markers between setup/teardown and print. then added the wipe, the copy pasted the print+wipe section a bunch of times.

My printer tends to run a bit better on single prints than printing a dozen at once as it has less issues with retract start and stop.

another great use and demo of the one eyed fighting kirby

Damn, supply chain vector attacks are wild. Random guy in Primes stream was getting $40k offers to buy their open source project while in university and they have never made anything from it. What a social engineering attack this is. It would be so easy to make it look like a good deal and that the package was going to a good new owner who has real resources to maintain it.

This is almost exactly what I have been thinking about building for quite awhile. I am going to give it a good try with a few $$ in filiment some cheap switches a microcontroller and go pretty bare bones, maybe open wiring on the bottom.

Absolutely sick post. This is top tier animated blog posts. This posts demos how different queuing systems work with fantastic interactive demos.