3.1.5.19 X-SharePointHealthScore Header

The server can monitor the current load and its ability to process requests. If it monitors the load, it can return the load information to the client in a X-SharePointHealthScore header. This header specifies a value between 0 and 10, where 0 represents a low load and a high ability to process requests and 10 represents a high load and that the server is throttling requests to maintain adequate throughput.