I miss teaching my observability classes. I'm excited to recreate the material probably next year and if I have my way this time it's going to be "open source" so I don't have to write half a book from scratch again.

I took an information theory focused approach last time because it's what I found to be best specifically for measuring the behavior of large scale systems behavior. Statistical views have their place and utility but my experience is that they typically lead to overly noisy detection and less ability to bisect issues.

#observability

NEW on We Open Source

AI is transforming observability. From AI Investigators to RAG, engineers are shifting from reactive fixes to proactive insights.

Recap from Wade Moore’s talk at All Things AI 2025: https://allthingsopen.org/articles/ai-observability-proactive-insights

Catch and resolve NXDOMAIN errors in minutes with #opensource, #eBPF-powered observability. Learn how to check #DNS health — then try it with your system: https://t.ly/aJfSX

Do you know the power of observability tools and how much you can achieve with them?

Leverage the expertise and advice of our experts, who've gathered the essence on our blog https://sml.io/blog-observability

And if you need a trusted team to implement these tools in your system, feel free to reach out to us!

What do you call an OTel collector written in #Rust? Rotel!
And it shows some impressive performance gains over the Go-written collector.

Check out the latest on this fascinating #opensource project fresh from Open #Observability Summit + #OpenTelemetry Day:
https://medium.com/p/d42c8826d6a5#079f

@opentelemetry.fosstodon.org @rustfoundation

If observability dashboards matter, they deserve to be treated like code.

That means version control, validation, repeatability... the whole kit and caboodle. Perses is a CNCF project that makes dashboards GitOps-friendly from the start, so they’re no longer fragile, ad-hoc artifacts that vanish when you need them most.

Thunder guest @ericschabell explains:
https://youtu.be/jx7JeZdJESo

Just published: My article on PHP Best Practices in Production is in the latest PHP magazin (in German)!

It covers:
- Performance and deployment tips
- Monitoring and error handling
- Common real-world mistakes to avoid

Read the full article: https://entwickler.de/php/produktiver-einsatz-php-best-practices

We’re excited to partner with Greptime to teach you how to set up a fully #FOSS observability stack — complete with a Prometheus Group compatible #datalake and real-time incident insights! https://t.ly/JNmvQ

AI will likely be integral to #observability in the future.

In this blog, we share the Grafana Labs perspective on the role of #AI in observability and how it's influencing the tools we're building to help our users:

https://grafana.com/blog/2025/08/14/ai-in-observability-at-grafana-labs-making-observability-easy-and-accessible-for-everyone/?camp=assistant-pub&mdm=social&src=masto

Diving deep into distributed microservices with OpenSearch and OpenTelemetry
Discover how enhanced service maps, span grouping, and latency charts in the latest Trace Analytics plugin help you trace issues faster. See how OpenTelemetry + Data Prepper can be used for end-to-end visibility.
Read the blog: https://opensearch.org/blog/diving-deep-into-distributed-microservices-with-opensearch-and-opentelemetry/

Learn how to gain #opensource #observability insights into network health with no code setup: https://t.ly/aJfSX