Which process runs server tasks, including extract refreshes and subscriptions?

The Backgrounder is a critical component of Tableau Server that is responsible for executing time-consuming tasks in the background. It handles processes such as extract refreshes, which ensure that the data is kept up-to-date without requiring additional user interaction. This function is essential for maintaining the accuracy and reliability of dashboards and reports that depend on current data.

Additionally, the Backgrounder manages the execution of subscriptions, allowing users to receive updated reports via email on a scheduled basis. By taking these tasks out of the user-facing components of Tableau Server, the Backgrounder helps enhance performance and user experience.

In contrast, while the Data Server manages the storage and sharing of data sources, the Cache Server optimizes query performance by caching results of queries, and the Gateway serves as the entry point for user requests to Tableau Server. These components have distinct purposes and do not handle background tasks like extract refreshes and subscriptions.