Does Galley have webhooks?
Galley provides a limited number of webhooks and a set of tools for staying up to date with entity changes.
Galley currently provides a limited number of webhooks. To learn what webhooks are available how to set them up, please review How do I set up and use Webhooks in Galley?
To stay up-to-date when on entities not currently supported with webhooks, you will need to schedule jobs (such as cron jobs) to poll the API to keep external systems up-to-date.
Many queries can be filtered to return only the items that have been updated for some time. For example, if you would like to identify the recipes that have recently had dietary flag changes you can pass the timestamp of your last job as a ge (greater than) dietaryFlagLastChangedAt filter to recipeConnection.
If a given query does not have a similar filter, you can pull all relevant entities and check what has been recently changed via the updatedAt field.