e7d44985_Apache_HTTP_Server_Version_2_4__Description
[Parameter] stickysession [Default] - [Description] 
Balancer sticky session name. The value is usually set to something like JSESSIONID or PHPSESSIONID, and it depends on the backend application server that support sessions. If the backend application server uses different name for cookies and url encoded id (like servlet containers) use | to separate them. The first part is for the cookie the second for the path. Available in Apache HTTP Server 2.4.4 and later.
mod_proxy - Apache HTTP Server Version 2.4
Description