2025-12-22

OTel in the browser

Reducing OpenTelemetry Bundle Size in Browser Frontend by Elizabeth from SigNoz contains some good tips to optimize the OTel footprint in the browser.

New PromQL function

Via the official Prometheus blog: read Introducing the Experimental info() Function by Arve Knudsen to learn how to benefit from this new PromQL function to enrich your time series with labels from info metrics.

OpenTelemetry 2026

Adriana Villela states that We’re past the OpenTelemetry “Honeymoon Period” and provides a wishlist for OpenTelemetry in 2026. Thanks!

Capital One case study

Via TNS: How Capital One Cut Tracing Data by 70% With OpenTelemetry by B. Cameron Gain. Interesting insights.

OTel host metrics

The good folks from Dash0 keep churning out great content. Check out Infrastructure Monitoring with OpenTelemetry Host Metrics by Ayooluwa Isaiah to understand the Why and How.

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That was it for this edition of the o11y newsletter. Feel free to share news items with me via Bluesky DM. Stay safe and hope to see you around next week!