GoLang Reverse Proxy Multiple Apps

Hi I have multiple apps Eg http://localhost:8899/exi/... (APP1) https://localhost:8984/... (APP2) http://localhost:8983/... (APP3) I would like something written in GOLang to reverse proxy Eg http://localhost:8899/exi/... --> https://localhost:3009/app1/ https://localhost:8984/... --> https://localhost:3009/app2/ http://localhost:8983/... --> https://localhost:3009/app3/ Somewhere to start is [login to view URL]