About the Origins page

Located under the Observability tab in the web interface, the Origins page gives you access to the Origin Inspector dashboard, which provides real-time and historic visibility into responses delivered from your origin servers to Fastly.

Before you begin

Origin Inspector is disabled by default. Anyone assigned the role of superuser can enable a 30-day trial directly in the web interface. After the trial expires, Origin Inspector can be purchased for an account by contacting sales@fastly.com. Once purchased, it can be enabled in the web interface by anyone assigned the role of superuser or engineer, which will result in changes to your monthly bill. When Origin Inspector is enabled, any user will be able to view the real-time and historic stats specific to Origin Inspector.

Enabling and disabling Origin Inspector

Origin Inspector can be enabled and disabled in the web interface by anyone assigned the role of superuser.

Enabling Origin Inspector

To enable Origin Inspector for a service:

1. Log in to the Fastly web interface.
2. Click Observability and then Origins.
3. Click the Origin Inspector switch to the ON position to enable Origin Inspector for the service.

Once Origin Inspector is enabled, you can start viewing real-time metrics about your origins immediately. Historic metrics usually become available two minutes after the end of each minute, but can take up to 15 minutes to appear.

Disabling Origin Inspector

To disable Origin Inspector for a service:

1. Log in to the Fastly web interface.
2. Click Observability and then Origins.
3. Click the Monitor origin responses switch to the OFF position to disable Origin Inspector for the service.

About the Origin Inspector dashboard

Once Origin Inspector is enabled for your account, the Origin Inspector dashboard displays the following metrics when you select All origins from the Origin menu:

• Responses by Origin: the number of responses processed by each origin.
• Response body bytes by Origin: the number of response body bytes returned by each origin.
• Response header bytes by Origin: the number of response header bytes returned by each origin.
• Status 2xx by Origin: the number of 2xx type (success) HTTP response status codes returned by each origin.
• Status 3xx by Origin: the number of 3xx type (redirection) HTTP response status codes returned by each origin.
• Status 4xx by Origin: the number of 4xx type (client error) HTTP response status codes returned by each origin.
• Status 5xx by Origin: the number of 5xx type (server error) HTTP response status codes returned by each origin.
• Origin Latency: a histogram showing the distribution of origin latency times. This tells you how quickly your origin is responding to Fastly. This metric only appears on the Origin Inspector dashboard when the Origin menu is set to a specific origin.

When you select any single domain from the Origin menu, the Origin Inspector dashboard displays the following metrics:

• Total Responses: the number of responses from an origin.
• Origin Bandwidth: the total bandwidth from an origin.
• Status Response Codes: the distribution of the number of status response codes for an origin.
• Origin Latency: the distribution of origin latency times, indicating how quickly your origin processes requests when responding to Fastly.
• Status 5xx Details: the distribution of different 5xx (server error) status response codes for the origin.
• Status 4xx Details: the distribution of different 4xx (client error) status response codes for the origin.
• Status 3xx Details: the distribution of different 3xx (redirection) status response codes for the origin.
• Status 2xx Details: the distribution of different 2xx (success) status response codes for the origin.

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