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Datadog | The Monitor blog

Introducing our open source AI-native SAST Instrument and monitor Boomi integration flows with OpenTelemetry and Datadog Not all index scans are equal: How we cut query latency by over 99% Platform engineering metrics: What to measure and what to ignore Integrate Recorded Future threat intelligence with Datadog Cloud SIEM CI/CD security: threat modeling using a MITRE-style threat matrix CI/CD security: How to secure your GitHub ecosystem Ingress NGINX is EOL: A practical guide for migrating to Kubernetes Gateway API Operating agentic AI with Amazon Bedrock AgentCore and Datadog LLM Observability: Lessons from NTT DATA Introducing the Datadog Code Security MCP Capture and analyze custom heatmaps in Session Replay Understand session replays faster with AI summaries and smart chapters Monitor ClickHouse query performance with Datadog Database Monitoring How we designed empathetic alert sounds for on-call engineers Search and act across Datadog to resolve issues faster with Bits Assistant Measure the business impact of every product change with Datadog Experiments Analyzing round trip query latency Configuring JavaScript caches for better performance Introducing Bits AI Dev Agent for Code Security Datadog achieves ISO 42001 certification for responsible AI Monitor Nutanix clusters, hosts, and VMs with Datadog Monitor Juniper Mist in Datadog A new Host Map for modern infrastructure Annotate traces to improve LLM quality with Datadog LLM Observability What’s new in Cloud SIEM: AI-powered investigations, enhanced threat intelligence, and scalable security operations Explore Kubernetes with native OpenTelemetry data Monitor Oracle Fusion Cloud Applications with Datadog Announcing the Datadog Terraform provider v4.0.0 Scaling Kubernetes workloads on custom metrics How to design cloud environments for AI-powered threat analysis Monitor Aruba Central in Datadog How we centralize and remediate risks with Datadog Case Management Accelerate incident response with Datadog and ServiceNow Monitor your application and network load balancer logs Understanding Karpenter architecture for Kubernetes autoscaling Tools for collecting metrics and logs from Karpenter Monitor Karpenter with Datadog What your product data is actually saying Key metrics for monitoring Karpenter Securing Datadog’s platform in the AI age: The role of observability data Four ways engineering teams use the Datadog MCP Server to power AI agents Approaching your observability migration with the right mindset Meet the new Bits AI SRE: Deeper reasoning, twice as fast Key learnings from the 2026 State of DevSecOps study Use plain English to query your multi-cloud infrastructure in Resource Catalog Simplifying troubleshooting across the user journey with Datadog Synthetic Monitoring Protect your OCI resources with Datadog Cloud Security This Month in Datadog - 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Watchdog: Auto-detect performance anomalies without setting alerts
Brad Menezes · 2018-07-12 · via Datadog | The Monitor blog
Brad Menezes

Brad Menezes

With [anomaly detection], [outlier detection], [forecasting], and [composite alerting], Datadog enables you to reliably alert the right people at the right time. But what happens when latency starts to increase, or error rates spike, in areas of your application where you haven’t set alerts? That’s what Watchdog is for.

Watchdog is a new auto-detection engine that surfaces performance problems in your applications without any manual setup or configuration. Using our extensively field-tested machine learning algorithms, Watchdog automatically detects issues in your data, such as latency spikes in your microservices, elevated error rates on any of your endpoints, or network issues in one of your cloud provider’s zones.

What’s the story?

As Watchdog detects anomalies across your environment, it creates a feed of “stories” with notable findings. Each story automatically highlights the timeframe of interest on a timeseries graph and provides a plain-language summary of what happened: which resource was affected, where, and for how long.

Automatically surface performance anomalies with Watchdog from Datadog.

Dive into the details

The detail page for a Watchdog event displays recent trends in the metric of interest, as well as a snapshot of performance metrics for the affected service or endpoint.

Each story in the Watchdog feed links directly to a detail page that provides further context for that specific service, endpoint, SQL query, or availability zone at that moment in time. The detail page automatically aggregates performance statistics (throughput, errors, and latency percentiles) for the particular service or resource.

The detail page for a Watchdog event displays shows the expected value of the metric so you can see the magnitude of the anomaly.

For the indicator that triggered the Watchdog story (e.g., the latency or error rate for your web application), the detail page displays the recent values of that indicator along with the expected values based on historical trends, so you can see just how significant the anomaly is.

Identify likely culprits

The detail page for a Watchdog event displays recent trends in the metric of interest, as well as stack traces that may help explain the issue

On the detail page for a Watchdog story, Datadog automatically surfaces related behavior that might have the same underlying cause, so you can see at a glance if the problem is widespread or confined to one particular part of your application.

For error events, Watchdog automatically pulls in common stack traces, so you can go from not knowing about an issue to knowing exactly which line of code is causing the issue in one click.

It’s not you, it’s your cloud

Watchdog alerts you to networking issues in your cloud platform.

Watchdog automatically detects network issues in your cloud infrastructure, so you can failover to an unaffected zone or re-route traffic to another cloud provider. In each network health story, you can see a map of the affected zones, as well as detailed metrics on TCP retransmits per availability zone to see exactly where and when the issue began to affect your applications.

Detect all the anomalies

Watchdog builds on Datadog’s established machine learning features, such as [anomaly detection], [outlier detection], and [forecasting], to produce high-quality results specially tuned for high-scale infrastructure and applications. At launch, Watchdog evaluates key application metrics, such as latency or error rates, from Datadog APM. We’re continually adding algorithms to apply Watchdog to new problems—like root cause analysis and Kubernetes anomaly detection—so it can detect new kinds of situations anywhere in your environment.

If you aren’t yet using Datadog, you can sign up for a free 14-day trial today, and unleash Watchdog to start detecting anomalies across all your services automatically.