Metrics in the Site Dashboard

Measure your site's traffic with the Metrics tool, found in the Live environment of the Site Dashboard.

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Access Metrics through the Live tab of the Site Dashboard once a Live environment has been initialized. The number of unique visits displayed in Pantheon’s Site Dashboard determines the traffic Pantheon will apply for evaluating use on your site under your pricing plan. The Site Dashboard also includes other information you may use to project future traffic, including number of pages served.

To access metrics for another environment, use the Terminus metrics command:

terminus metrics <site>.<env>

Access Metrics

  1. Navigate to the Live environment of the Site Dashboard.
  2. Click Metrics.
  3. Toggle displayed date ranges by clicking Day, Week, or Month: Charts for pages served and visits within the Metrics tool of the Site Dashboard

Available Metrics

The number of unique visits displayed in Pantheon’s Site Dashboard represents the traffic measurement Pantheon will apply for evaluating use on your site under your pricing plan. The Site Dashboard also includes the number of pages served, to help evaluate trends, and project future traffic. Traffic information is refreshed daily.

The data comes directly from our Global CDN, which tracks all requests for resources on Pantheon. However, many known bots and crawlers do not count towards site traffic limits, nor do we meter requests for static assets (images, PDFs, CSS, JS, etc.).


A visitor is a person or device who/that receives information from the site. The platform counts each visitor once per day, regardless of the number of times they return that day or the number of pages they visit that day.

Site Visits

We consider a Site Visit as a 200-level (and some 300-level) response code in response to a visitor, and we identify unique consumers as a combination of user agent (device/browser) and IP address (network source), as shown in the diagram below.

Pages Served

Think of this as something that gets delivered to the visitor: Pages served is the number of requests for resources generated by the CMS (WordPress or Drupal). Most commonly these are HTML web pages, but they also include non-HTML resources such as JSON, RSS, or XML-RPC. These are typically used for bringing data into the site from another source (e.g., a list of places on a map).

The number of Pages Served allowed for each Site Plan is five times the maximum monthly Site Visits.

For both metrics, the platform counts based on the total volume of requests, which includes visitors receiving pages (or other CMS-generated resources) which are served from our Global CDN cache.

Diagram demonstrating how pages served and visits are tracked

As shown here, visits and visitors have different meanings. If two visitors go to the site, and one opens another page but the other leaves, that would be tracked as two visitors; three pages served. If one of those visitors returns again the next day, it would be counted as two visitors, three visits, and four pages served.

How do you know if a visit counts?

The visit counts if it:

  • Is valid
  • Is not a known bot
  • Returns a 200-level response that originates from PHP;

Additionally, if that visit is from a unique IP and user agent combination for the day, then that counts as a unique visitor that day too.

Flowchart shows that traffic is only counted as a visit if the points above are satisfied and it loads successfully.

Frequently Asked Questions

How often is data collected?

Data is updated daily, shortly after midnight UTC, with data for the previous day.

How long do you keep the data?

Data is retained for the following amounts of time:

PeriodData Retention
Day28 days
Week12 weeks
Month12 months

Can I download or access the raw data directly?

Raw data is not currently available.

Why doesn't Pantheon's traffic match my analytics?

There are some inherent limitations with using an analytics suite (e.g., Google Analytics) when measuring site traffic. For details, see Traffic Limits and Overages.

How does Pantheon handle overages?

All non-Basic plans come with free overage protection. Where there is a pattern of consistent overage, we will align a site's plans with its load on the platform. For details, see Traffic Limits and Overages.

What about bots?

Pantheon-identified bots are excluded from the Visits and Pages Served Metrics. See Traffic Limits for more information.

What about redirects?

Only requests with a 200-level status count as pages served, so 301 redirects will not be included in metrics. See Traffic Limits for more information.

Are multiple user agents on the same originating IP address counted separately?

Yes. For example, multiple devices on the same home network visiting your site would each be considered a unique visitor. See Traffic Limits for more information.

Can I check metrics from the command line with Terminus?

Yes! Access to metrics via the Terminus metrics command. Install Terminus or update to the current release for access to the metrics command.

See Also