iiinova — where your digital self keeps evolving

Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 30/06/2026

@openvalue.eu Hackathon Day 3. I compared Opus and Sonnet using @grafana.bsky.social gcx to diagnose the OpenTelemetry demo. Both pinpoint the root cause correctly. And I wrote a short reflection after 3 days working on AI and how to apply that on Observability. ceesbos.nl/posts/observ...

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 29/06/2026

2nd hackathon day with @openvalue.eu I tested gcx from @grafana.bsky.social with claude. It works very well (with some follow up questions) really impressive! I learned: Claude code exports OTEL data, that gives really useful insights!! And a nice team outing 😀 goto.ceesbos.nl/hack2026d2

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 27/06/2026

Next steps for a new day are to see if AI in combination with 'gcx' can solve the issues as I presented last year on Devoxx Belgium and JCON. I am curious what the results will be ...

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 27/06/2026

The yearly hackathon with @openvalue.eu! 33 degrees Celcius inside the building is pretty challenging ... Today started with a 'AI-accelerated development' training by @tomwigleven.bsky.social. After that I started exploring the new @grafana.bsky.social 'gcx' cli tool. goto.ceesbos.nl/hack2026d1

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 05/12/2025

For both the deep dive and increasing observability: ☝️count me in! What would you do? Do you need help? Send me a message ⛑️.

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 05/12/2025

And yes, that gave me sometimes a headache or a restless night. But the reward of having a stable environment is worth it! Sometimes, however, you cannot find the answer straight away, and you need to increase the observability of your application(s)/infrastructure.

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 05/12/2025

What actually happened? What was the root cause? 😟 🕵️I tempt to opt for the 'hard path' and conduct a thorough investigation, especially in unusual cases with significant impact. I tend to dig as long as I can to find the actual cause and by doing so I already found quite some nasty problems ☺️ 🧵

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OpenValue @openvalue.eu · 04/12/2025

Our OpenValue Wrapped 2025 is here! How many cups of coffee? How many AI pair programming sessions? And did we deploy on Fridays? Watch the GIF to find out👉 #OpenValueWrapped #BetterSoftwareFaster

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 10/10/2025

🚀 New challenge alert! Can you spot performance issues when using virtual threads? Observability Code Challenge 2 compares regular threads vs virtual threads in Java 21 & 25 using OpenTelemetry and Grafana. 👉 goto.ceesbos.nl/ghch02 #Java #Observability #VirtualThreads #OpenTelemetry #AOCC

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 06/10/2025

Today I had the honor to speak at @devoxx.com about "How I solved production issues with OpenTelemetry (and how you can too)" 📷 Photos taken by Dimitris Doutsiopoulos & @johanhutting.bsky.social In case you missed it: slides, code examples and more is available goto.ceesbos.nl/devoxx2025

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 06/10/2025

Upfront you have time to prepare, after the presentation you get some questions etc and other talks with the attendees, then it harder to find time for that. And with uploading upfront, you can also share the link during the presentation.

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 06/10/2025

Just prepared the last pieces for my presentation at @devoxx.com I am ready for it, so let's go #devoxx

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 29/09/2025

Next week #Devoxx Belgium! I am preparing my talk for next week at the moment. Are you joining as well? Hope to see you there @devoxx.com! m.devoxx.com/events/dvbe2...

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 23/05/2025

I am glad you found the content and I feel honored that you share this as well. If you have any questions about this, please let me know

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Michael Hausenblas @mhausenblas.info · 19/05/2025

Check out this week's o11y newsletter with excellent OpenTelemetry hands-on material and more: o11y.news/2025-05-19/ #observability

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 20/05/2025

@mhausenblas.info Thanks for adding my talk to the list. There is also a recording made of the talk, but not available yet. Once that is available I will add it to the page as well, that will help to understand the slides and what the demo code is about.

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 13/05/2025

Today I had great time at #JCON2025 presenting 'How I Solved Production Issues with OpenTelemetry (And How You Can Too)". The @jcon.one conference is really cool to join and talk with fellow developers and share thoughts. Missed the talk? Check the slides, code and more goto.ceesbos.nl/jcon2025

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JCON Conference @jcon.one · 23/03/2025

Excited for #JCON EUROPE 2025? See Cees Bos at #JCON2025 in Cologne talking about 'How I #Solved Production #Issues with #OpenTelemetry (And How You Can Too)' Ensuring the reliability of your #Java applications is #critical … Get your free #JUG Ticket: www.jcon.one

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 02/05/2025

🚨 Code Challenge Alert! The first Application Observability Code Challenge explained in a step-by-step approach. #OpenTelemetry helped to increase the observability, #Grafana helped to visualise it. 👉 goto.ceesbos.nl/bs-c1s @grafana.bsky.social @opentelemetry.io #Observability

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 01/05/2025

Today I am preparing for #JCON Within two weeks I will be presenting how #OpenTelemetry can help you with your observability challenges. I am looking forward to the conference! @jcon.one

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Roy van Rijn @royvanrijn.com · 14/02/2025

🚨 There has been a breakthrough in the world of hash tables 🚨 A paper that disproves the longstanding conjecture that uniform hashing is optimal. "Optimal Bounds for Open Addressing Without Reordering" by Martín Farach-Colton, Andrew Krapivin, William Kuszmaul arxiv.org/html/2501.02...

arxiv.org

Optimal Bounds for Open Addressing Without Reordering

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Michael Hausenblas @mhausenblas.info · 20/01/2025

Check out this week's o11y newsletter with really excellent contributions from an o11y challenge to instrumentation tips to tooling: o11y.news/2025-01-20/ #observability #opentelemetry

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 17/01/2025

🚨 Code Challenge Alert! 🚨Dive into the first Application Observability Challenge 🛠️ Uncover unexpected behavior using test scripts and observability data, then enhance it to prove your fix! Ready to debug? 🤔👩‍💻👨‍💻 goto.ceesbos.nl/c1 #CodeChallenge #Observability #OpenTelemetry

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 10/01/2025

📣 Application Observability Code Challenges are coming soon! Goal: develop an observability mindset and practice with your observability tools. goto.ceesbos.nl/aocc The first challenge is being prepared! Stay tuned! #AOCC #OpenTelemetry

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 18/12/2024

I totally agree with you. Observability [123].0 is totally useless if you don't learn and act on it. I am also missing talks about that as well. I gave it it a try in a talk (goto.ceesbos.nl/fiwo) but closing the loop back to my code is for me the most important part of o11y. Learn and act!!

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Grafana @grafana.bsky.social · 10/12/2024

🎉 Wicked! #GrafanaCON 2025 is headed to Seattle (Emerald City) from May 6-8! As a bonus, we’ve added a full day of workshops on May 6. We had hundreds of people on our waitlist last time, so sign up to receive notifications tickets go on sale: grafana.com/events/grafa...

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 11/12/2024

#GrafanaCON 2025 has been announced by @grafana.bsky.social 📣 This reminds me of my own talk back in April, it was a great honour to speak at GrafanaCON 2024 see goto.ceesbos.nl/gc24 I am looking for to this event in 2025! See grafana.com/events/grafanacon Maybe on stage again??

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Grafana @grafana.bsky.social · 09/12/2024

🎉 Introducing the #OpenTelemetry Report. This new report presents insights around #OTel's rapid growth, central value, instrumentation, community engagement, and developer traction. Take a look (no form required!): grafana.com/opentelemetry-report See a few charts and findings in 🧵.

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Susanne Pieterse @susivic.bsky.social · 03/12/2024

I learned more about Spring Modulith and OpenTelemetry at the @openvalue.eu Utrecht meetup today. Thanks 🙏 @ceesbos.nl and Jos Roseboom and the organisers.

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Roy Wasse @roywasse.bsky.social · 03/12/2024

Amazed by the detective skills of @ceesbos.nl shown in his observability talk #opentelemetry

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Bert Jan Schrijver @bjschrijver.dev · 03/12/2024

Second talk at the @OpenValue.eu Utrecht meetup: @ceesbos.nl talking about solving issues with OpenTelemetry 👌🏻

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 30/11/2024

+1 I think that can help the most to make others more excited about observability and it help to show how to use the tools. This is also exactly the reason why I prepared a presentation about how I solved problems with otel and Grafana for coming Tuesday at a meetup.

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 30/11/2024

Then the script of your demo changes live on stage ... but most of the times I am learning the most of these unexpected situation, both as presenter and as attendee.

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 29/11/2024

By the way, I was not the only one facing a problem with 503 errors ... already a issue was opened, so I could add my findings to the ticket, hopefully that contributes to a fast resolution of the issue. github.com/open-telemetry/opentelem…

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 29/11/2024

❓ Do you recognise this❓ Just before a demo, update to the latest version, start the new version and 💥 But that is the good thing about #observability and #OpenTelemetry, you can find 🔍 the problem and fix it 😅 This is why I love #observability: it helps to fix problems faster 🏎️

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Grafana @grafana.bsky.social · 26/11/2024

Does your observability practice incorporate #Prometheus? #OTel? Both? Let us know in the 2025 Observability Survey. It only takes 5 minutes and you could win a #Grafana swag pack! grafana.com/observability-survey/?m…

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 23/11/2024

I know that Grafana Scenes library is released like this: github.com/grafana/scenes Each time a merge to main is completed an new release is created. You can choose which version you want to use due to proper release versioning. That helps if you are waiting on a certain fix. @grafana.bsky.social

github.com

GitHub - grafana/scenes: Build Grafana dashboards directly in your Grafana app plugins.

Build Grafana dashboards directly in your Grafana app plugins. - grafana/scenes

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 21/11/2024

If you have lots of new and active users like @bsky.app, I can imagine that the systems are having tough times and upscaling is needed. I'm curious about how the monitoring dashboards look like these days. 📈 Nice to see the stats at: bsky.jazco.dev/stats @jaz.bsky.social thanks! #observability

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Jago de Vreede @jagovreede.bsky.social · 20/11/2024

SDKman-UI is now also available for x86 OSX. I've just released v0.2.0 github.com/jagodevreede...

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Cees Bos 👨🏻‍💻 📉🔍📈 ✅ @ceesbos.nl · 21/11/2024

𝗛𝗼𝘄 𝗜 𝘀𝗼𝗹𝘃𝗲𝗱 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗶𝘀𝘀𝘂𝗲𝘀 𝘄𝗶𝘁𝗵 𝗢𝗽𝗲𝗻𝗧𝗲𝗹𝗲𝗺𝗲𝘁𝗿𝘆 (𝗮𝗻𝗱 𝗵𝗼𝘄 𝘆𝗼𝘂 𝗰𝗮𝗻 𝘁𝗼𝗼) 📣 I am happy to announce that I will speak at a meetup of @openvalue.eu Based on real-world cases I will tell how #OpenTelemetry helped me to solve production issues, #Grafana helped to visualize the data. Check the invite ⬇️

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