High-cardinality dimensions blow up custom-event counts and cost, warning surface from NRQL metric inspection.
At a glance
High-Cardinality Metric Warnings is a cost & capacity metric tracked from New Relic data. It surfaces operational signal at the cost & capacity layer so merchants can spot regressions, opportunities, and structural patterns in their store performance. The card pairs with sibling metrics in the Cost & Capacity category to build a complete diagnostic picture; cross-reference the related cards listed below for context.
| What it counts | High-Cardinality Metric Warnings as exposed by the New Relic integration. The metric is computed from the latest available data and refreshed on the standard data refresh. |
| Sample type | Backend API data from New Relic, refreshed on the standard data refresh. |
| Why it matters | The metric appears in the Cost & Capacity category and complements the sibling cards listed below. Track movement over time to identify regressions or opportunities. |
| Reading the value | Compare the current period to the prior period to identify direction. Cross-reference siblings for the full diagnostic picture. |
| Currency | number |
| Time window | 7D |
| Alert trigger | >5 metrics flagged |
| Sentiment key | nr_high_cardinality_metrics |
| Roles | engineering |
Calculation
Calculated automatically from your New Relic data. See the At a glance summary above for what the metric tracks and the worked example below for a typical reading.Worked example
A representative reading of High-Cardinality Metric Warnings for a typical merchant on New Relic. The card reports the current period value alongside a comparison against the previous period. Direction matters: rising values may be healthy or concerning depending on the underlying metric. Cross-reference the siblings below to triangulate cause when the value moves outside expected range. For deeper investigation, use Vortex Mind to trace upstream causes; for natural-language exploration, ask Ask Viq.Sibling cards merchants should reference together
| Card | Why merchants reach for it |
|---|---|
nr_data_ingest_quota | Cost & Capacity sibling: Data Ingest Quota Used. |
nr_infra_spend_trend | Cost & Capacity sibling: Infrastructure Spend Trend. |
nr_log_indexing_cost | Cost & Capacity sibling: Log Ingest Cost Trend. |
nr_5xx_rate | Errors & Exceptions sibling: 5xx Response Rate. |
nr_agent_gaps | Infrastructure sibling: Hosts with Stale Agent (>24h). |
Reconciling against the vendor’s own dashboard
Where to look in New Relic’s own dashboard: The New Relic dashboard surfaces this metric (or its components) under the relevant report section. Confirm period boundaries and filter settings match the Vortex IQ profile to reconcile cleanly. Why the Vortex IQ value may legitimately differ:| Reason | Direction | What to do |
|---|---|---|
| Period boundary. Vortex IQ uses 30-day rolling by default; vendor dashboards may use calendar periods. | Variable | Match the period range. |
| Time zone. Vendor uses account time zone; Vortex IQ aligns to merchant reporting time zone. | Marginal | Confirm time zone match. |
| Filter scope. Profile-level filters (channel, B2B, test orders) may narrow the Vortex IQ view. | Variable | Match filter settings. |