RudderStack lets you set a schedule for importing data from your Reverse ETL sources while setting them up in your dashboard. It lets you specify the schedule type that defines how and when the syncs will run.
RudderStack supports the following three schedule types:
Run syncs at a given time interval and specified time.
Run syncs based on a CRON expression defined by the user.
Run syncs manually.
This schedule type lets you run the data syncs at a set interval. You can specify the sync frequency as well as the time(in UTC) when you want the sync to start.
Frequency - You can choose the data sync frequency from the following options:
Sync Starting At - Specify the time at which the data sync should start.
This schedule type lets you define a custom CRON expression and runs the data syncs based on this setting.
The following sections explain the behavior of the two sync modes(Upsert and Mirror) when a sync schedule is set in RudderStack.
For upsert mode, you can trigger a new sync anytime by pressing the Sync Now button. Multiple syncs can run simultaneously.
RudderStack takes a snapshot of the data and syncs it at a later point once the pending syncs are completed.
For mirror mode, you can run only one sync at any given point of time. A new sync starts only after the previous one is completed.
Suppose you have a sync scheduled for every 30 minutes. If there is a sync running for more than 30 minutes, then the next scheduled sync will be skipped when using the mirror mode.
Can I change my sync schedule type?
Yes, you can.
Go to the Syncs tab in your Reverse ETL source details page and click the settings button as shown:
Then, select your new sync schedule type.
Alternatively, you can also go to the Settings tab and click the Edit sync schedule button to define your new schedule type.
I’m unable to run a sync manually and get the message “Your pipeline is paused. Make sure that the source and at least one destination is enabled”. What do I do?
This message appears when either your Reverse ETL source, the connected destination, or both are disabled. Go to the Settings tab to verify if the source and destination are enabled for data syncs.
What happens if I don’t set the Sync Starting At time?
RudderStack considers strict time windows to schedule syncs if you do not explicitly set the time under Sync Starting At.
Suppose you create a source at 12:30 hrs UTC, specify the Frequency as 3 hours, and do not specify any time under Sync Starting At. In this case, as the time falls in the 12:00-13:00 time window, RudderStack will run the next sync at 15:00 hrs UTC (12:00 + 03:00 = 15:00 hrs).
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