Software Architecture book bundle by O’Reilly.

This bundle looks familiar, so double-check if you have it already before
buying. I’ve checked my books, and it was not there, but still.

#books

OPA is apparently Apple now.

At least the creators and many maintainers of OPA have joined Apple recently.

What does it mean for the project? Time will tell. OPA remains in CNCF. So, this acquisition may be a good thing: at least, now maintainers would have stable income, so the project won't end up like External Secrets Operator

#opa #security

The topic of cost optimization has gained a lot of popularity in the last couple of years. However, oftentimes people pay more attention towards compute capacity and SaaS offerings, which makes sense, since those are usually the biggest contributors to the overall bill.


Still, in this Reddit thread you can find some actionable advices on how to keep your S3 bill in check.

Those are tips from real people based on their experience in a wild, not just a random Medium post, which makes it extra useful in my eyes.

#aws #finops

Better late than never! So, here's a fresh issue of the CatOps Digest!

https://newsletter.catops.dev/p/catops-digest-2025-08-22

#digest #newsletter

​​For today's Donations Monday, let's help our friends from the UkrOps Club to complete their fundraiser for the electronic warfare equipment for the 46th Brigade.

https://send.monobank.ua/jar/6tomFnD5Rb

#donations #Ukraine

Some new features of Go 1.25 regarding WaitGroups. Now, there's a new function wg.Go that simplifies the goroutine management, so you can omit wg.Add(1) and wg.Done() calls. Therefore, there's less possibility that you'll forget about those.

#go #programming

Cloudflare shares some insights from their redesign of their KV-storage following the Google's outage.

In nutshell, they use a combination of their distributed database and a vendor's cloud storage depending on the size of data. This line I find particularly interesting:


Cloudflare engineers explain that "for workloads dominated by sub-1KB objects at this scale, database storage becomes significantly more efficient and cost-effective than traditional object storage."

#cdn #databases

The deprecation of Bitnami public resources is apparently moved one month ahead.

A bit of a relief for those who haven’t yet migrated, but still.

#bitnami #docker #kubernetes

​​For today's Donations Monday, I'd like to ask you, once again, to help our friends from the UkrOps Club with their fundraiser for the electronic warfare equipment.

https://send.monobank.ua/jar/6tomFnD5Rb

About 50% of their "support jar" is covered.

#donations #Ukraine

Many years in a row we organize the DevOps Days Kyiv conference for you!

This year isn't an exception. Tomorrow at 17:00 Kyiv time (14:00 UTC) we meet online once again online to talk about AI and its role in the software development industry.

We have open space afterward, so it's not a one way road: you'll be able to share your thoughts and experience there as well!

The conference is free, all you need is to register on the website:

https://devopsdays.com.ua/

See you there!

#event #devopsdays

A new CatOps Digest is out:
https://newsletter.catops.dev/p/catops-digest-2025-09-06

These digests are great reminders for me, how little I post to the channel lately 😔

#digest #newsletter

​​For today's Donations Monday, I'd like to remind you about the UA Responders foundation. They work in the medical and rehabilitation field.

We cooperate with them for the DevOps Days Ukraine conference since the beginning of the full scale invasion.

Here's the direct link to donate:
https://uaresponders.org/donate/

#donations #Ukraine

Learnkube is a great resource, because they explain how Kubernetes works not only within its own abstractions, but in relation to other technologies.

Im this article they explain, how Kubernetes’ Security Context maps to the Linux primitives.

Tires article would be useful even if you’ve worked with both Linux and Kubernetes for some time, since recalling basic things from time to time is important.

#kubernetes #security #linux

If you use KEDA in production, make sure you monitor it :)

Here are some useful Grafana dashboards for that.

#observability #grafana #keda #kubernetes

They thought the Cloud was easy, predictable and Serverless is a best option... for become a truly horror!

Serverless Horrors is a collection of true thriller stories. Confusing settings, crashes, and unexpected traffic turn serverless accounts into a bloody mess for your wallet. Read on to avoid becoming the hero of the next horror story.

Happy Friday, btw 😈

#serverless

If you don’t like debugging the certificate issues, why not make the machine do it for you?

cert-manager-mcp-server is an MCP server from one of the members of our community.

I guess, we are in our “fuck around” phase with MCP servers and real-world AI applications. So, check it out and see, if it’s helpful!

#mcp #ai

​​For today’s Donations Monday, I’d like to remind you once again about the UA Responders foundation that works in the medical and rehabilitation field.

We cooperate with them for the DevOps Days Ukraine conference since the beginning of the full scale invasion.

Here's the direct link to donate:
https://uaresponders.org/donate/

#donations #Ukraine

​​I'm back from a brief vacation, hence there was no newsletter last Friday. While, I'm catching up with things, you can help our friends from DOU and complete their survey about Ukrainian companies (in Ukrainian).

https://jobs.dou.ua/questionary/

The next issue of the newsletter comes tomorrow 🤞

A new issue of the CatOps Digest is here:

https://newsletter.catops.dev/p/catops-digest-2025-09-26

#digest #newsletter

As you may have already guessed from the newsletter, a recording of my talk alongside the other talks from FW Days DevOps is available now on YouTube.

So, like, subscribe, and so the rest of the YouTube dance for the great FW Days team :)

#slides