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https://issues.apache.org/jira/browse/AIRFLOW-1005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeremiah Lowin updated AIRFLOW-1005:
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Attachment: Screen Shot 2017-03-17 at 6.04.23 PM.png
> Speed up Airflow startup time
> -----------------------------
>
> Key: AIRFLOW-1005
> URL: https://issues.apache.org/jira/browse/AIRFLOW-1005
> Project: Apache Airflow
> Issue Type: Improvement
> Affects Versions: 1.8.0
> Reporter: Jeremiah Lowin
> Assignee: Jeremiah Lowin
> Priority: Minor
> Attachments: Screen Shot 2017-03-17 at 6.04.23 PM.png
>
>
> Airflow takes approximately 1 second to import. It turns out that more than
> half the time is spend doing two things: importing Cryptography to create
> Fernet keys and importing Alembic.
> The first Cryptography import is in configuration.py and is only necessary if
> Airflow is generating a new airflow.cfg file (but currently gets run every
> time). Therefore it can be easily deferred.
> The second is in models.py to check if encryption is turned on. This can also
> be deferred until encryption checks are actually needed.
> Alembic is always imported even though it is only needed for running initdb()
> and upgradedb(). It can be lazily imported inside those functions.
> These simple changes reduce Airflow's startup time by half on my machine.
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