Datadog integrates directly with Varnish and more than 100 other technologies for comprehensive infrastructure monitoring. Our integration allows you to collect all relevant Varnish performance metrics, visualize them, slice and dice them, and correlate them with metrics from the rest of your infrastructure. You also can set up alerts that trigger when anomalies occur and send notifications via the communication tools you already use, such as PagerDuty and Slack.

Datadog collects every Varnish statistic, including these key performance metrics:

  • Requests per second

  • Dropped client connections

  • Cache hit rate

  • LRU Nuked objects

  • Worker thread related metrics

  • Backend connection failures or unhealthy backends

All these metrics are displayed on an out-of-the-box Varnish dashboard on Datadog, which you can customize to suit your own needs.

Used in production
Varnish version supported: 
Commercial support: 
Varnish Software