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TL;DR: Attribute. More information on one event gives us more correlation power. It’s also cheaper. When you want to add some information to your tracing telemetry, you could emit a log, create a span, or add a piece of data to your current span. Adding a piece of data to your current span is the best! Usually.

Modern distributed systems fail in ways that can bypass even well-designed isolation patterns. When a failure is actively propagating across services at four in the morning, the question shifts from “how do we limit the blast radius” to “how do we confirm what it actually is.” Monitoring shows which services are in the impact zone, but it cannot show what code path caused the failure to spread, or whether it has stopped.

For IT professionals evaluating Observability for large, complex enterprise environments, the shortlist usually starts with technical depth and ends with operational reality.

On May 5, 2026, a major.de outage disrupted access to websites across Germany and Europe. The incident, caused by a failure at DENIC, the operator of the.de top-level domain, resulted in widespread DNS resolution failures. This was not a typical service outage. It was a failure at the DNS layer that made entire domains unreachable. As DNS caches expired, more services went offline, creating the appearance of a spreading outage across unrelated companies.

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We’re excited to learn that our vmagent helped Airbnb migrate its high-volume metrics pipeline from StatsD and Veneur to OpenTelemetry. Airbnb is now handling 100 million samples per second. You can read more about the migration in these articles: In other news, April saw releases across the VictoriaMetrics Observability Stack. We have released several important bugfixes for VictoriaMetrics and many new features in VictoriaLogs. This release round-up covers updates for.

In the world of observability, “cardinality” has become a heavy word. It is a ghost used to justify skyrocketing bills or degraded query performance. When cardinality rises, the advice is almost always the same: reduce it. Drop your labels, or reduce the dimensions. It is usually framed as “optimization.” Every label you add to a metric is a dimension of knowledge. Each one gives you a way to slice, compare, and explain the chaos of production.

Events from Expo apps account for about 75% of the total event volume we receive from React Native apps. That number made it an easy decision to invest in updates to the Sentry React Native SDK to improve the debugging and performance workflow for your Expo apps. With these updates, you can now.