Find the runtime bottleneck behind "Ruby is slow"
Track process RSS, GC.stat heap slots and object allocations, active thread count, and CPU time. Spot memory leaks and heap growth in long-running Puma workers before they force a restart.

Dash0 Raises $110M Series B at $1B Valuation
Diagnose slow Rails requests, trace jobs across Sidekiq queues, and monitor Puma workers end to end. Built natively on OpenTelemetry, with no proprietary agent or SDK required.
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Infrastructure engineer - Chargetrip
In an age of overly complex tools, we find that Dash0 stands out for its simplicity and speed. With simple pricing, easy integration, amazing filtering capabilities, fast handling of large data volumes, and straightforward alerting with clear error messages, Dash0 makes observability a breeze.

CTO - Hayuno AG
Despite being a young company, Dash0 delivers enterprise-grade quality and features—automatic instrumentation, spans, logs with semantic context, PromQL support, AI-powered trace triage—all working reliably from day one.

Senior Full-Stack Engineer - catchHR
Dash0 has significantly streamlined our approach to observability and OpenTelemetry, bringing everything together in one place. The intuitive interface and seamless integration have enabled us to quickly gain valuable insights into our systems and resolve issues efficiently.

Senior Web Developer - CroCoder
What I love most about Dash0 is that it's fully OpenTelemetry native which has significantly improved our software development process. The seamless navigation from logs to traces to metrics streamlines bug diagnosis and troubleshooting, enhancing our team's efficiency.

Software Engineer - Vercel
The tracing UI is amazing. When we switched to Dash0, it significantly cut down the amount of time from a bug being reported to figuring out why it happened and fixing it. Filtering on attributes is extremely intuitive, and the tracing tree UI is awesome.

DevOps Cloud Architect - AV Software Solutions 360° at Bechtle
With Dash0, we have found an OpenTelemetry-native solution that provides the flexibility we need. With the support of the open standard OpenTelemetry, we are able to handle public resources responsibly.

Solution Architect - Porsche Digital
Dash0's foundation on open source standards ensures future-proof and next-gen observability. Their focus on ease of use empowers all of our developers to gain insights quickly.
Process memory, GC stats, thread counts, and Sidekiq queue depth for Ruby in production.
Track process RSS, GC.stat heap slots and object allocations, active thread count, and CPU time. Spot memory leaks and heap growth in long-running Puma workers before they force a restart.


Distributed traces that follow context through Puma's threaded request handling, Sidekiq job queues, and Rails middleware. You see the full flow from web request to background job, not just the Rack request.
Logs, traces, metrics, and alerts in one connected view. Click from one to any other.

Navigate directly from a log line to the trace that generated it, then drill from any span into the associated metrics. Supports Ruby’s standard Logger and Rails tagged logging out of the box. OpenTelemetry trace-context correlation and Dash0’s resource-centric architecture handle the linking automatically—no manual instrumentation or custom correlation logic required
Define alerts for Ruby process memory, Sidekiq queue depth, and Rails request latency using PromQL or the visual query builder. Reuse community-maintained rules from Awesome Prometheus Alerts, then route notifications to email, Slack, or any webhook endpoint.

dd the OpenTelemetry gems to your Gemfile, configure the SDK at boot, and your app starts exporting traces. No code changes required.

Add opentelemetry-sdk, opentelemetry-exporter-otlp, and opentelemetry-instrumentation-all to your Gemfile, then configure OpenTelemetry::SDK.configure in a Rails initializer or boot file. Works with Puma, Unicorn, or Passenger.

The Dash0 Operator auto-instruments Ruby pods on Kubernetes with zero code changes — Rails apps, Bundler-managed services, and plain Ruby scripts on Ruby 3.3 or later.

Open-source skills for Claude Code, Cursor, Windsurf, and 38+ other AI coding agents. Correct resource attributes, span status codes, and Collector patterns from the first commit.
Use standard OpenTelemetry across instrumentation, export, and querying without proprietary agents or vendor-specific code in your repository.
Dash0 is OpenTelemetry-native by design. Instrument with the official OpenTelemetry Ruby SDK while preserving semantic conventions and resource attributes end to end, so telemetry remains standardized and portable across distributed systems.

Import your existing Prometheus alerts and query traces, logs, and metrics with PromQL or SQL.

Perses-compatible dashboards, PromQL alert rules, and OTel Collector configs. Everything Dash0 produces is an open-standard artifact you can commit to git.