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Data Quality and Observability Framework
A production control layer for blocking bad data, monitoring freshness, and turning incidents into preventive engineering controls.
Gates
publication-blocking checks
Runbooks
faster incident recovery
The failure mode
What had to be solved
Critical reporting and AI consumers needed data products that were validated before publication and operationally supportable after deployment.
Validate
Validation gates check schema, nulls, duplicates, reconciliation, referential integrity, freshness, and business rules.
Reconcile
Orchestration routes failures into monitored paths with alerts, exception reporting, quarantine tables, and ownership metadata.
Monitor
Observability dashboards track pipeline metrics, freshness SLAs, volume anomalies, dependency failures, and incident status.
Recover
Runbooks define recovery points for partial loads, bad files, schema changes, reprocessing, and SLA breaches.
Key Engineering Decisions
01
Block publication instead of reporting bad data
Downstream consumers needed certified data products, not dashboards that discovered errors after publication.
Placed schema, null, duplicate, reconciliation, freshness, and business-rule gates before warehouse publication.
02
Turn failures into observable workflows
Pipeline failures, bad files, schema changes, and SLA breaches needed consistent operational handling.
Routed failures through monitored orchestration paths with alerts, exception reporting, ownership metadata, and runbooks.
03
Convert incidents into preventive controls
Recurring data issues should reduce future risk instead of becoming repeated manual triage.
Used root-cause analysis to add schema checks, freshness thresholds, reconciliation rules, tests, and automated recovery logic.
Operating Spec
Scale
- Critical enterprise data products
- Multi-source ingestion and warehouse publication
- Operational SLA monitoring
Quality
- Publication-blocking validations
- Source-to-target reconciliation
- Schema contracts
- Freshness thresholds
- Business-rule checks
Reliability
- Runbooks
- Automated alerts
- Backfill controls
- Incident triage
- Preventive controls from recurring failures
Tools
dbt TestsGreat ExpectationsPySpark AssertionsAzure MonitorCloudWatchAirflowLineageData Contracts