Add battle-tested improvements to app-python, app-apx, and model-serving skills#209
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…ing skills Real-world fixes from deploying Databricks Apps in production: databricks-app-python: - Add 5 critical MUST/MUST NOT rules: /metrics endpoint, CDN blocking, don't delete-recreate apps, don't upload dev files, React hooks ordering - Fix valueFrom YAML syntax (valueFrom.resource instead of flat valueFrom) - Add CLI API PATCH workflow for attaching resources programmatically - Add valueFrom vs value fallback troubleshooting - Add port binding guidance and DATABRICKS_APP_PORT details per framework - Add "never delete-recreate" warning and clean stale files workflow - Add Lakebase OAuth security label error fix and PGPASSWORD workaround - Add Lakebase Sync (reverse ETL) quick-start instructions - Add 4 new troubleshooting entries: App Not Available, blank frontend, React Error #310, gateway health check databricks-app-apx: - Add React Error #310 (hooks ordering) troubleshooting entry databricks-model-serving: - Add system.ai.similarity_search to built-in UC functions table
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Summary
Adds real-world fixes and troubleshooting guidance to 3 skills, based on hands-on experience deploying Databricks Apps in production.
databricks-app-python(6 files, +8.4KB)Critical Rules (SKILL.md):
/metricsendpoint requirement — gateway health-checks this endpointnode_modules/,__pycache__/,frontend/src/)Resource Management (2-app-resources.md):
valueFromYAML syntax (valueFrom.resource:instead of flatvalueFrom:)valueFromvsvaluefallback troubleshootingFramework Guidance (3-frameworks.md):
DATABRICKS_APP_PORTdetails per framework command/metricsendpoint, CDN blocking, never delete appsDeployment (4-deployment.md):
Lakebase (5-lakebase.md):
SECURITY LABEL FOR databricks_auth)PGPASSWORDempty workaround using SDK token generationTroubleshooting (SKILL.md):
databricks-app-apx(1 file, +385B)databricks-model-serving(1 file, +61B)system.ai.similarity_searchto built-in UC functions tableTest plan
valueFromYAML syntax matches current Databricks Apps runtime/api/2.0/apps/<app-name>)system.ai.similarity_searchis a valid built-in function