[Milestone] Configuration and Visibility

[matejminar]

Problems we're solving

• visibility: give DDM customers visibility onto which metrics and tags are being ingested (will become more important also for cost control once we start charging)
• addressing PII concerns: allow users to delete existing stored metrics data
• “blocking” rogue metrics: ability to stop future ingestion of a specific metric or ignore certain tags
• surfacing cardinality limits: customers need to know when this is happening and which metrics are affected

Product Requirements

Tasks

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1. Configuration and Visibility Kick-off #60583
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Metrics visibility

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1. create new settings page #60764
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2. list all metrics with unit #60765
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3. filter them by name #60766
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4. smol icon in DDM that takes me to settings for metric #60768
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Block / delete metrics

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1. feat(server): Denylist for metrics relay#2954
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2. Hide metric #60860
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3. See the list of blocked metrics #60769
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Post-Launch Improvements (stretch)

The following milestone depends on metric-based cardinality limits. We'll link the corresponding initiative here.

Cardinality

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1. Show cardinality in metrics settings (detail) #60772
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2. Show cardinality in metrics settings (index) #60773
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3. Show cardinality limits in UI #60309
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4. (optional) show which metrics have been cardinality limited

Tag visibility / manangement

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1. list tags #60770
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2. delete ("untag") existing stored data per tag #60862
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3. see the list of blocked tags #60771
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4. Untag during ingestion (ie. remove tag key, keep data) relay#2797
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Other

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1. See when the tag was last seen #60767
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2. update last seen even for blocked metrics