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HI! I wanted to run 2 or more flows independently for ETL processes with cron. What are the best practices? Is there some way of doing so ?

Hi <@U03CJ9FCNJ0>, you can do that using Prefect. Specifically for CRON check this page <https://orion-docs.prefect.io/concepts/schedules/#cronschedule>

```from prefect.deployments import DeploymentSpec
from prefect.orion.schemas.schedules import CronSchedule

DeploymentSpec(
    name="cron-schedule-deployment",
    flow_location="/path/to/flow.py",
    schedule=CronSchedule(
        cron="0 0 * * *",
        timezone="America/New_York"),
)```

ok I got about cron part...
How about running 2 flows independently?

that works natively with Prefect, no need to do anything else here :slightly_smiling_face: you can just schedule two flows with the same schedule/cron expression

image.png

ok lets explain with img its faster.
I need flow that runs other flows

the syntax I shared before was for Prefect 2.0 - in Prefect 2.0 there is a concept of subflows allowing you to call flows from other flows by calling those as any other function

here is the difference between 1.0 and 2.0 <https://discourse.prefect.io/t/should-i-start-with-prefect-2-0-orion-skipping-prefect-1-0/544>

here is about subflows: <https://orion-docs.prefect.io/concepts/flows/#subflows>

what is about prefect==1.2.0 is that possible in that version too?

no, Prefect 2.0 is a completely new product with a different API behind it

in Prefect 1.0 (we're talking 1.0 as a generation of a product, not a specific version) there is a concept of flow of flows (aka "orchestrator pattern") allowing you to call a flow from another flow - you can read more about it <https://discourse.prefect.io/tag/create-flow-run|here> (including many examples)

<https://towardsdatascience.com/managing-dependencies-between-data-pipelines-in-apache-airflow-prefect-f4eba65886df>

This was exact answer which I found from your link

that's fantastic, so glad this has helped :raised_hands:

please only cross-check the syntax - the article was using a much older Prefect version