ASP.net标识记住我的时间跨度

我需要帮助记住我。我似乎找不到任何东西来帮助我寻找的东西。记住,我似乎没有做任何事情来改变我的注销时间。

在startup.auth.cs中,我有:

app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = MyAuthentication.ApplicationCookie,
                LoginPath = new PathString("/Account/Login"),
                //Provider = new CookieAuthenticationProvider(),
                Provider = new CookieAuthenticationProvider
                {                         
                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                        validateInterval: TimeSpan.FromMinutes(0),
                        regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
                },
                CookieName = "MyCookieName",
                CookieHttpOnly = true,
                ExpireTimeSpan = TimeSpan.FromHours(1), // adjust to your needs
            });

authenticationManager.SignOut(MyAuthentication.ApplicationCookie);
authenticationManager.SignIn(new AuthenticationProperties() { IsPersistent = RememberMe }, identity);

authenticationManager从传入 IAuthenticationManager authenticationManager = HttpContext.GetOwinContext().Authentication;

我要遗漏什么?无论IsPersistent是否为true,总是在一小时后注销而不处于活动状态。我不完全理解“记住我”功能应该如何工作。