🚨 ALERTS{alertname="NewBlogPost", alertstate="firing"} 1 I wrote a about exciting and ambitious changes we are making in @cncf.bsky.social @prometheus.io project: prometheus.io/blog/2026/02... Diving into the potential future of the "native" model for the composite metric types in Prometheus. 💪

Modernizing Prometheus: Native Storage for Composite Types | Prometheus

An open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

prometheus.io

Make me care" is probably first rule to follow in tech talks too, tldr: story telling! gwern.net/blog/2026/ma...

First, Make Me Care

Writing advice: some nonfiction fails because it opens with background instead of a hook—readers leave before reaching the good material. Find the single anomaly or question that makes your topic inte...

gwern.net

Side projects, blog, podcasting is hard with 2 small kids, but I eventually managed to find time for a blog! (PS: I had to switch to 5am routine 🙈) Wrote some words about #lazygit OSS tool and what we can learn from its UX. Enjoy! 🤗 bwplotka.dev/2025/lazygit/

The (lazy) Git UI You Didn't Know You Need

When my son was born last April, I had ambitious learning plans for the upcoming 5w paternity leave. As you can imagine, with two kids, life quickly verified this plan 🙃. I did eventually start some p...

bwplotka.dev

FYI, @cncf.bsky.social #KubeCon Europe (23-26th March) CFP closes in 3 days (12th October). What fun talks do you plan to propose? (: events.linuxfoundation.org/kubecon-clou... What'd you like to like to hear more about? Maybe you'd like to co-speak? Happy to mentor/co-speak with passionate ppl!

Call For Proposals (CFP) | LF Events

KubeCon + CloudNativeCon gathers adopters and technologists from leading open source and cloud native communities from 23-26, March. Join our current graduated, incubating, and sandbox projects as the...

events.linuxfoundation.org

PromCon is one month away! 🤗 We wrote all your need to know on our blog: prometheus.io/blog/2025/09...

PromCon is Only One Month Away; See You in Person or via Live Stream! | Prometheus

An open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

prometheus.io

Fun bugs happen, let's see if you can spot them (without looking on comments)! (: Quiz#1: Why "make check" will never detect any formatting errors in the following snippet: gist.github.com/bwplotka/5c6...

quizes_total{} 1: Why "make check" will never detect any formatting errors?

quizes_total{} 1: Why "make check" will never detect any formatting errors? - Makefile

gist.github.com

Thinking about starting writing more again (blog posting, social media).. should I? I have some engineering/oss/mentoring topics queued for too long 🙈

Ever dreamed to be mentored by @prometheus.io community; get skilled in high performance monitoring databases, @golang and help #opensource on the way? Apply today on the LFX website 🤗 mentorship.lfx.linuxfoundation.org#projects_all

Saswata Mukherjee@saswatamcode.tech · last yr.

Applications for @prometheus.io LFX mentorships open today! We have some really impactful projects this time, around Prometheus <-> OTel UX, Remote Write 2.0, and Native summaries. Go apply to work with some really cool folks, and learn while you're at it! github.com/cncf/mentori...

Reminder: The CfP for #PromCon (October 21+22 in Munich) is open! Please submit your @prometheus.io talks :) promcon.io/2025-munich/...

Things that brings the joy 🙃

"Every now and then, some people stop me in the street and say, ‘Oh, are you James Gosling? Thank you for giving me a career. I’ve been writing Java code for 20 years, and it’s been a great career.`" - JG thenewstack.io/java-at-30-t...

Java at 30: The Genius Behind the Code That Changed Tech

From trash-diving teen to tech pioneer, James Gosling's pragmatic genius shaped three decades of Java and modern computing.

thenewstack.io

This April release, a new excited API, called Leo, was added to our Family! ♥️ We will be spending our time now to learn Leo requirements and outputs, so expect delays from me in OSS world in May... 🙈

New experimental garbage collector for Go programs! github.com/golang/go/is...

runtime: green tea garbage collector · Issue #73581 · golang/go

Green Tea 🍵 Garbage Collector Authors: Michael Knyszek, Austin Clements Updated: 2 May 2025 This issue tracks the design and implementation of the Green Tea garbage collector. As of the last update...

github.com

Common painful thing. But I think we found epic solution, available from next @prometheus.io version, who knows! Slides with the recorded demo is available here: docs.google.com/presentation...

[Public] KubeConEU 2025: How to Rename Metrics Without Impacting Somebody’s Observability

How to Rename Metrics Without Impacting Somebody’s Observability Arianna Vespri, SWE at Safespring Bartek Płotka, Senior SWE at Google KubeCon EU; London; 03.04.2025 feat.

docs.google.com

Matthias Loibl@metalmatze.de · last yr.

What? Breaking metrics? 😱 @bwplotka.dev

What? Breaking metrics? 😱 @bwplotka.dev

For the first time, @cncf.io sandbox project @PersesDev will be at #KubeCon EU in London with a booth in the Project Pavilion at kiosk number 3B! Core maintainers @nexucis, Antoine Thébaud, @ntakashi.com, and Gabriel Bernal will be there for a chat!

I've just updated all of my Prometheus monitoring trainings at training.promlabs.com to Prometheus v3 and also updated most other component versions (Alertmanager, exporters, Prometheus Operator, SDKs, ...) to keep things fresh. Check out the trainings if you want to learn @prometheus.io :)

Learn Prometheus From the Creator

Learn Prometheus in the most effective way with online trainings by PromLabs

training.promlabs.com

What's weird in this @prometheus.io screenshot? What do you think about this? (:

Go 1.24 now has Swiss Maps! Good thing I am an expert on those, all about it at FOSDEM!

I will be speaking (again) about Go's new Swiss Maps at the Golang Oxford Meetup this Thursday. www.eventbrite.co.uk/e/a-journey-...

'A Journey to 50% Better P99 Times with Go' & 'Swiss Maps in Go'

Whether you're a seasoned Golang developer or just starting out, this group is for anyone passionate about learning and exploring Go.

eventbrite.co.uk

Epic discussion around @golang.org error handling: github.com/golang/go/di... Adventurous ideas. Ofc there might something to improve, but the following image is still applicable: 🙈

We see more and more questions/responses on GitHub issues on OSS projects clearly generated with the help of GenAI - very generic, asking kind of unrelated questions. Quite hard to judge what part contributor exactly does not understand and how to help. Do you experience similar? Any tips? (:

Looks like @golang.org 1.24 is going to be pretty epic! Weak pointers, properly working finalizers alone might change the game! Then optimized maps, native fake clock, benchmarking reliability and ease of use, and tooling dependency management.. and more! antonz.org/go-1-24/

Go 1.24 interactive tour

Weak pointers, faster maps, directory-scoped access, and more.

antonz.org

With Filip we wrote a blog post explaining the new @golang.org 1.23 "iter" package and its unexpected use case in the Go gRPC world and @thanos.io We also dive into Go coroutines (not goroutines!) that makes new iterators even more special, enjoy! 🤗 bwplotka.dev/2025/go-grpc...

Now it’s official! I’m thrilled to announce I’ll be speaking at Observability Day alongside @Anthoine Thebaud about Dashboard as Code and Perses. See you all in London, folks!

KubeCon + CloudNativeCon Europe 2025: Limitless Possibilities, Consistent Desi...

View more about this event at KubeCon + CloudNativeCon Europe 2025

buff.ly

📢 New year, new compliance! We're excited to share that Polar Signals Cloud is now SOC2 type 2 compliant! 🔐 www.polarsignals.com/blog/posts/2...

Polar Signals Achieves SOC 2 Type 2 Compliance

Reinforcing our unwavering commitment to robust security

polarsignals.com

Orange sky is so magical. Imagine full time working from here...

I prefer yesterday.

I've finally gotten around to publishing my notes on how I use jj for contributing to Go/working with Gerrit. pratt.im/notes/jj-go-...

Coding AIs are great, but sometimes it feels good to use the old-school regex replacements you can trust without review 🙈