在asp.net mvc中设置当前用户

Question

我不确定这是否是最好的方法,但我希望在当前用户的所有请求期间保持用户对象的活动状态.通过阅读几个资源,我了解到你应该创建自己的IPrinciple来保存它.但我不希望每个身份验证请求都触发数据库.关于如何处理这个问题的任何建议？缓存db请求是个好主意吗？

 protected void Application_AuthenticateRequest(Object sender, EventArgs e)
    {
        HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
        if (authCookie != null)
        {
            FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);

            User user;
            using (HgDataContext hg = new HgDataContext())
            {
                if (Session["user"] != null)
                {
                   user = (from u in hg.Users where u.EmailAddress == authTicket.Name select u).Single();
                } else
                {
                   user = Session["user"] as User;
                } 
            }
            var principal = new HgPrincipal(user);
            Context.User = principal;
        }
    }

Answer 1

我现在使用以下代码来缓存用户，请注意在更新后删除缓存！

 protected void Application_AuthenticateRequest(Object sender, EventArgs e)
        {
            HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
            if (authCookie != null)
            {
                FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);

                User user;
                Cache cache = HttpContext.Current.Cache;
                using (HgDataContext hg = new HgDataContext())
                {
                    user =  cache[authTicket.Name] as User;
                    if (user == null)
                    {
                       user = (from u in hg.Users where u.EmailAddress == authTicket.Name select u).Single();
                       cache[authTicket.Name] = user;
                    }
                }
                var principal = new HgPrincipal(user);
                Context.User = principal;
            }
        }