A collection of video tutorials on various DevOps-ish topics on Humble Bundle.

I don’t know if any of those are good, but there are some of the big names behind some videos.

If you’re not interested in videos, there’s also a bundle of book on ML and AI from O’Reilly. Those are usually good.

#books

I haven’t participated in salary surveys by DOU because it was limited to people based in Ukraine. This limitation is lifted now.

Also, this time (not sure if it was always like this) salary survey comes together with the survey about the popularity of programming languages. It would be interesting to compare its results with the similar research by StackOverflow.

Yet, for the results to be representative, make sure to spend a couple of minutes and fill out the survey!

A new issue of the CatOps Digest is here!

https://open.substack.com/pub/catops/p/catops-digest-2023-12-10

#digest #newsletter

​​Less than 10% left to fulfill the Protect the Sky fundraiser that Come Back Alive is doing together with Nova Posta.

This is a big one, but let’s pull out!

#donations #Ukraine

A brief glance into how Uber’s ETA calculator works.

tl;dr: Graph segmentation and smart guessing.

#programming #system_design

An interesting read by Monzo about how they implemented Kubernetes Network Policies for 1.5k microservices.

There are some questionable parts in there, in my opinion. For example, why building your own tool to "guess" where an app connects to if you could use a network monitoring tool. However, those are not directly related to the main topic.

An interesting part is how folks in Monzo "reverted" the idea behind Network Policies using templating. So, instead of a target services allowing internal connections, a caller can specify the groups of services it wants to connect to.

Although, I think it partially negates the idea of Network Policies, I can completely understand, why Monzo did that from the UX perspective.

Also, here's a Reddit discussion on the topic. I love the top comment there:

 How would you even know that another team plans to connect your apps?
- By communicating...

#kubernetes #networking

If you are running dynamic environments in Kubernetes or any other ephemeral workloads, you need a way to clean up things once these environments are no longer needed or once your tests are done.

k8s-cleaner may help with it. It's a controller that deletes Kubernetes resources, including custom resources, on a schedule. It supports dry run and some options for customizations.

#kubernetes

​​Protect the Sky fundraiser has 5% left to close its goal!

It was 10% two weeks ago, when I previously posted this fundraiser.

Thus, I believe it’s possible to close it before the end of the year!

#donations #Ukraine

A Linux book bundle on Humble Bundle. Now, I know that people have mixed feelings about books by Packt. Some folks say that they are too basic.

So, if you’re unhappy about the Packt books, you may want to check the Software Development bundle that has a couple of books on CI/CD, DevOps, and SRE topics.

#books

​​**Database Fundamentals.**

Because it just fundamentals, it can take a few hours to read and understand + mandatory breaks :)

It's one of the best articles I've seen on general DB topics, with a huge amount of links and notes to go deeper into Rabbit Hole. Definitely recommend it to read.

#databases

Let's talk a little bit about culture. Culture of sabotage!

That's a nice guide of how to drop productivity to a minimum without being caught. Enjoy!

https://erikbern.com/2023/12/13/simple-sabotage-for-software.html

#culture

Root Cause Chronicles: Connection Collapse is a hypothetical (or not?) scenario of a production outage.

What I like about such hypothetical scenarios compared to postmortem articles is that they usually focus on the process, while postmortems focus on outcomes. In other words, in articles like this you see something like: “We checked an app A and then an app B, and then this DB and that cluster; and finally we found it!”, while postmortems tend to condence the same process into dry statements like: “After thorough investigation we found that it was a DNS issue”.

Thus, such hypothetical articles better showcase an actual process of the incident resolution, in my opinion.

Bonus: InfraCloud (authors of this article) have a repository with such incident scenarios that you can study.

#sre #oncall #incident_management

I was about to leave for the wnter holidays, but then I recalled that I still owe you the last issue of the CatOps Digest of this year.

So, here you are!

https://open.substack.com/pub/catops/p/catops-digest-2023-12-26

I wish you very pleasant holidays and see you next year!

#digest #newsletter

​​З Новим Роком, коти!

Happy New Year! 🎄

Let's start a new year with something entertaining, like talk about hacking train DRM to be able to fix it.

Additional points, if you'll describe in comments which DevOps, Software Engineering, and Legal Practices were violated by the train manufacturer (:

And, don't forget to support Ukraine 🇺🇦.

​​Start the new year with donations to the Ukrainian military!

Back and Alive raise 220M UAH for Ukrainian snipers.

You can join the fundraiser here

#donations #Ukraine

A new episode of our voice chat is here! This time we had a single yet broad topic of architecture and the architect role in companies.

The episode is in Ukrainian and available on:

- YouTube
- Substack
- Spotify
- Apple Podcasts
- Google Podcasts

Enjoy!

P.S. Also, CatOps is participating in the DOU Awards "Podcasts" department! I would really appreciate it if you could support us here with your vote!

#voice_chat

The first CatOps digest of the year 2024 is available here:

https://newsletter.catops.dev/p/catops-digest-2024-01-07

#digest #newsletter

​​I would like to remind you about the UA Responders foundation that raises funds for tactical medicine.

You can support them here:

https://uaresponders.org/donate/

#donations #Ukraine

Just recently Denys made a video about the interviewing process into a “hot” AI startup.

They use Python there (surprise, surprise). And just today I’ve noticed a Python book bundle on Humble Bundle.

Also, if you’d rather switch to the management career track all together, there’s another book bundle for you.

I know that some people complain about the quality of Packt books, but I’m a simple man: I see a relevant book bundle - I share it. Now, you can decide for yourself.

#python #management #books

You know how it works: people are posting their end-of-the-year results at the end of each year and their predictions for the future at the beginning of each year.

In this video, Viktor Farcic shares his thoughts on the tools to check out (or continue using) in 2024.

#tools #predictions #video