Writing
Notes from production
Short write-ups of problems my team hit while building Farmdar's platform, and how we fixed them.
· 4 min read
Ten million S3 list requests from one Airflow run
A single crop-monitoring run listed an S3 folder about ten million times in one day. The cause was one GDAL default, and the fix was four environment variables set in the right place.
· 7 min read
Moving every Farmdar app to Cognito without a big-bang cutover
How we replaced a home-grown JWT login with AWS Cognito across web and mobile apps in phases: dual-mode tokens behind a feature flag, a hosted UI, and a provisioning bug we only found in testing.