Alert Deduplication
Automatically group identical alerts to see what matters.
When an infrastructure problem affects multiple monitors (datacenter outage, global DNS issue), you can receive dozens of simultaneous alerts. Deduplication groups them intelligently.
Instead of 50 separate emails, you receive a summary indicating "50 monitors affected" with the list of affected services. Clearer, more actionable.
How Deduplication Works
- Pattern detection: MoniTao identifies when multiple alerts arrive in a short time window.
- Grouping: Similar alerts (same error type, same probable cause) are grouped.
- Aggregated notification: A single message summarizes the situation with the number of affected monitors.
Benefits
- Overview: Immediately understand the scope of the problem (1 service vs entire infrastructure).
- Less noise: One aggregated notification instead of dozens of identical messages.
- Easier diagnosis: If 50 monitors go down at the same time, the cause is probably common.
Deduplication Methods
- Temporal: Alerts arriving in a 1-2 minute window are candidates for grouping.
- By error type: 503 errors, timeouts, DNS errors are grouped by category.
- By tag/group: Monitors tagged together (same project, same client) are grouped.
Frequently Asked Questions
Does deduplication delay alerts?
Slightly. MoniTao waits 30-60 seconds to group simultaneous alerts.
Can I see the detail of each grouped alert?
Yes, the aggregated message contains the list of affected monitors and a link to the dashboard.
Does deduplication work between projects?
By default no, but you can create cross-project groups for grouping.
Can I disable deduplication?
Yes, in alert settings. You'll then receive each alert individually.
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