Apache rewrite the specified URL to a specified number of servers

The existing is Apache load balanced to 6 different tomcat above, today encountered the need to forward some specified URL to the specified 3 Tomcat requirements, must be modified rewrite rule rules, online search for a half-day, there is no good solution, Then I stumbled across Rewritemap and found that I could customize the function and used it as follows:

Rewritemap Servers Rnd:/wd/apache2/conf/serversmap.txt

Rewriterule ^/(. +) (Relax/phonelottery) (. +) http://192.168.28.27:${servers:port}/$1$2$3 [P]

Where ${servers:port} represents the value from the Rewritemap servers to obtain the key port (Rnd is random, which means random fetching), and this value exists in the/wd/apache2/conf/serversmap.txt file

Open File/wd/apache2/conf/serversmap.txt

More/wd/apache2/conf/serversmap.txt

Port 8086|8085|8084

So it can be solved.