What is the functionality of port 4444?

Port 4444 is designated for handling state status requests related to the Qlik Sense Repository Services (QRS). The QRS is a core component in the architecture of Qlik Sense, responsible for managing application metadata and system configuration. It facilitates communication between various Qlik Sense components, ensuring that the services are operating correctly and that resources can be properly monitored and managed.

When client applications or other components need to interact with the repository—in particular, to check the status of different services or to query information regarding the state of the system—they will use this port to send their requests. The responses from the QRS can provide valuable insights into the operational health of the Qlik Sense deployment.

Understanding the role of port 4444 in managing state status requests highlights its importance in the stability and functionality of the entire Qlik Sense ecosystem, enabling effective monitoring and management of the system's services.