我有以下四个类:
public class Section
{
public int SectionId { get; set; }
public string Name { get; set; }
public string Title { get; set; }
public string MetaTag { get; set; }
public string MetaDescription { get; set; }
public string UrlSafe { get; set; }
public string Header { get; set; }
public string ImageName { get; set; }
}
public interface ISectionRepository
{
List<Section> GetAllSections();
}
public class SectionRepository : ISectionRepository
{
Context context = new Context();
public List<Section> GetAllSections()
{
return context.Sections.ToList();
}
}
public class SectionApplication
{
SectionRepository sectionRepo = new SectionRepository();
public List<Section> GetAllSections()
{
return sectionRepo.GetAllSections();
}
}
在我的 Controller 中,我有
public class SectionController : Controller
{
SectionApplication sectionApp = new SectionApplication();
public ActionResult Index()
{
return View(sectionApp.GetAllSections());
}
}
现在,我想在特定时间内在内存上缓存部分,以便从缓存中读取部分(如果存在),否则从数据库中读取。
最佳答案
简单可行的方法,您可以使用MemoryCache ,代码将如下所示:
public List<Section> GetAllSections()
{
var memoryCache = MemoryCache.Default;
if (!memoryCache.Contains("section"))
{
var expiration = DateTimeOffset.UtcNow.AddMinutes(5);
var sections = context.Sections.ToList();
memoryCache.Add("section", section, expiration);
}
return memoryCache.Get("section", null);
}
关于c# - 如果它存在而不是数据库,我如何缓存对象并从内存中读取?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14999599/