Understanding checks

Overview

A check is the record of a single monitor test. Every time a monitor runs, it writes one check row with the result.

What checks record

Each check captures:

• Status: Whether the check passed (up) or failed (down)
• Timestamp: When the check was performed
• HTTP status code: The response code for HTTP monitors
• Response time: How long the check took in milliseconds
• Message: Success confirmation or error details

Viewing checks

You can view checks in two places:

• Checks page: Navigate to Checks in the sidebar to see recent checks across all monitors
• Monitor details: Click any monitor to see its specific check history in the Response Times table

Check frequency

Frequency follows the monitor's interval. Shorter intervals detect incidents faster but produce more data and more load on the target.

See also

• Check details and timing
• Filtering and date ranges
• Monitor intervals and timing