Pragmatic Programmer

    public class WindsorControllerFactory : DefaultControllerFactory
    {
        private readonly IKernel kernel;

        public WindsorControllerFactory(IKernel kernel)
        {
            this.kernel = kernel;
        }

        public override void ReleaseController(IController controller)
        {
            kernel.ReleaseComponent(controller);
        }

        protected override IController GetControllerInstance(System.Web.Routing.RequestContext requestContext, Type controllerType)
        {
            if (controllerType == null)
            {
                throw new HttpException(404, string.Format("The controller for path '{0}' could not be found.", requestContext.HttpContext.Request.Path));
            }

            return (IController)kernel.Resolve(controllerType);
        }
    }

    public class ControllersInstaller : IWindsorInstaller
    {

        public void Install(Castle.Windsor.IWindsorContainer container, Castle.MicroKernel.SubSystems.Configuration.IConfigurationStore store)
        {
            container.Register(Classes.FromThisAssembly()
                                        .BasedOn<IController>()
                                        .LifestyleTransient());
        }
    }

    public class MvcApplication : System.Web.HttpApplication
    {
        private static IWindsorContainer container;

        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();

            WebApiConfig.Register(GlobalConfiguration.Configuration);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
            AuthConfig.RegisterAuth();

            container = new WindsorContainer().Install(FromAssembly.This());

            var controllerFactory = new WindsorControllerFactory(container.Kernel);
            ControllerBuilder.Current.SetControllerFactory(controllerFactory);
        }
    }