The HTTP Keep-Alive, or also commonly referred to as an HTTP persistent connection, is an HTTP header that allows a connection between the server and client (browser) to remain open to transfer multiple files.
Enable Keep-Alive
What is HTTP Keep Alive?
Benefits of the HTTP Keep Alive Header
Without the HTTP Keep Alive header, there would have to be a connection opened for each file that needs to be accessed and transferred. If the Keep Alive function is turned off, a user would have to initiate a separate request each time a filed is needed. By turning this on, it allows the server to serve the necessary resources over a single connection, which helps to reduce CPU/memory usage on the server. Additionally, developers can set the number of requests allowed (MaxKeepAliveRequests) and timeout (KeepAliveTimeout) for this header that best meet your website’s requirements.
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