Data & AI

Event-Driven Batch Triggering with Airflow

Data & AI Pipelines diagram · made in Skemio

Architecture showing an S3 bucket emitting upload events to SQS and AWS Lambda, which calls the Airflow REST API to trigger batch execution workers.
Architecture showing an S3 bucket emitting upload events to SQS and AWS Lambda, which calls the Airflow REST API to trigger batch execution workers.
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What it shows

  • S3 Event Notifications trigger SQS and Lambda without cron polling lag.
  • Airflow REST API triggers DAG runs dynamically with file metadata payloads.
  • Reduces schedule latency from 15+ minutes down to under 2 seconds.

The takeaway

Replace cron schedule intervals with storage event notifications to trigger Airflow DAGs instantly.

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