Today, we’re adding settings for real-time updates to the App Dashboard. The Graph API supports real-time updates, which let your app subscribe to changes in the social graph. With this addition to the App Dashboard, you can quickly configure these subscriptions for objects you care about and get callbacks when they're modified. This lets you update cached data when you need to, instead of polling Facebook's servers continuously — making your app more reliable and decreasing load times for your users.
The new real-time updates API tab includes several settings for creating and managing your subscriptions. Now you can:
To get started, check out the documentation for the real-time updates API.