Is there a way to set the start time of a IntervalClock for

Question

Is there a way to set the start time of a IntervalClock for a flow using an input parameter

Anna Geller · Answer

What s your use case Why would you want to do it this way

Naga Sravika Bodapati · Answer

dockerize flows and trigger them from one parent flow

Anna Geller · Answer

how is the parametrization of scheduled start time relevant here it may sound like a dumb question but I don t see the connection here

Anna Geller · Answer

interval schedules are generally meant to be running every X say every 15 minutes I would like to understand why parametrizing the start time would matter here given it runs on a regular interval anyway

Naga Sravika Bodapati · Answer

We have to start 150 flows with batches of 10 each and 10mins apart

Anna Geller · Answer

so the problem is batching and limiting concurrency

Naga Sravika Bodapati · Answer

yes

Naga Sravika Bodapati · Answer

```clock 1 = IntervalClock timedelta minutes=10 start date=datetime now ist parameter defaults= Frequency Start At 0 clock 2 = IntervalClock timedelta minutes=10 start date=datetime now ist + timedelta minutes=15 parameter defaults= Frequency Start At 15 ```

Naga Sravika Bodapati · Answer

can i use something like this

Naga Sravika Bodapati · Answer

for the parent flow

Anna Geller · Answer

Nice I m so glad we identified the actual problem here Using parameters is not a good solution here instead it would be better if you set a concurrency limit for this flow check <https docs prefect io orchestration flow runs concurrency limits html|this page>

Naga Sravika Bodapati · Answer

thanks anna will check

Anna Geller · Answer

to explain why even if we define the parameters to start the first run at a given time using a parametrized start date the interval clock will keep spinning up new flow runs every 10 minutes for each of those clocks which doesn t solve your actual problem of queueing the too many runs but concurrency limits will help

Naga Sravika Bodapati · Answer

yeah makes sense

Naga Sravika Bodapati · Answer

Will try this out Anna slightly smiling face