feat(#263): implement alert aggregation to prevent alert fatigue - #323
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Ebuka042-pixel wants to merge 1 commit into
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feat(#263): implement alert aggregation to prevent alert fatigue#323Ebuka042-pixel wants to merge 1 commit into
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…igue - Add AlertAggregator class that groups alerts by service + alertType - Suppress transient alerts until threshold is reached within a time window - Fire a single aggregated notification once threshold or window elapses - Configurable grouping rules: service, alertType (wildcards supported), threshold count, and windowMs — all replaceable at runtime via PUT endpoint - Custom groupBy key for sub-grouping within a service+alertType pair - Track maxSeverity across grouped alerts (info → warning → error → critical) - Redis persistence of group state for cross-replica awareness (TTL=600s) - Prometheus metrics: alerts_ingested_total, alerts_fired_total, alerts_deduplicated_total, active_alert_groups - Default rules: provider_timeout(5/2min), high_error_rate(1), aml(1), queue_depth(10/5min), catch-all(5/5min) - Add admin REST endpoints: GET/PUT/POST /api/admin/alerts/rules, GET /api/admin/alerts/groups, POST /api/admin/alerts/flush, POST /api/admin/alerts/ingest (non-prod only) - Wire route into index.ts under requireAuth guard - Tests verify: threshold firing, window flushing, deduplication ≥70% reduction, rule resolution priority, severity tracking, flushAll
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closes #263