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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