Firebase schedule crontab limitations

Question

I want to schedule a Firebase cloud function to run at every 10th minute from 5 through 59 (5,15,25,35...).

5/10 * * * *

However, when I deployed my schedule it only triggered my function at minute 5 of any hour.

I think that my crontab is not supported by Firebase.

How do I implement such a crontab?

Thanks

Answer 1

Due to Firebase crontab limitations, I had to solve my issue by giving the exact minutes I want the function to be triggered.

5,15,25,35,45,55 * * * *

Firebase do support that format.

A good use-case, to know if your cron is supportad by Firebase before deploying your function, is to validate your cron on crontab.guru. You will be notify wether your cron is standard or not. Firebase support only standard crons.