Practitioner notes from real Airflow estates.
October 2, 2026 · Dagvane
Every waiting sensor holds a worker slot. Moving the wait to the triggerer frees capacity, but only if you change the right sensors and run the triggerer properly.
Read moreSeptember 29, 2026 · Dagvane
When the DAG processor is the bottleneck, tasks sit queued and new DAGs take minutes to appear. How to measure parse time per file and bring it down.
Read moreSeptember 22, 2026 · Dagvane
A clean upgrade lint does not prove the data is the same. How to run both environments side by side and compare what they produce before cutover.
Read moreSeptember 15, 2026 · Dagvane
Airflow 3 tasks no longer get a database session. The five patterns we find most often in 2.x estates, and what to replace each with.
Read moreSeptember 8, 2026 · Dagvane
The upgrade lint rules flag hundreds of findings on a real estate. Most are mechanical; a few are rewrites. Here is how to tell them apart.
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