class UserController {
    def logout() {
        log.info "User agent: " + request.getHeader("User-Agent")
        session.invalidate()
        redirect(action: "login")
    }
    def login() {}
}
session
Purpose
The {grailsdocs}ref/Servlet%20API/session.html[session] object is an instance of the Servlet API’s {javaee}javax/servlet/http/HttpSession.html[HttpSession] class
Examples
Description
The {javaee}javax/servlet/http/HttpSession.html[HttpSession] class is useful for associated session data with a client.
| The additional methods added to the session object are documented in the Grails Servlet API reference guide |