如何在 Asp.net core 中缓存资源? [英] How to cache resources in Asp.net core?
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问题描述
你能给我举个例子吗?我想缓存一些在网站上大部分页面中会经常使用的对象?我不确定在 MVC 6 中推荐的做法是什么.
Can you please point me to an example. I want to cache some objects that will be frequently used in most of the pages on the website? I am not sure what will be the recommended way of doing it in MVC 6.
推荐答案
在startup.cs
中:
public void ConfigureServices(IServiceCollection services)
{
// Add other stuff
services.AddCaching();
}
然后在控制器中,将 IMemoryCache
添加到构造函数中,例如对于 HomeController:
Then in the controller, add an IMemoryCache
onto the constructor, e.g. for HomeController:
private IMemoryCache cache;
public HomeController(IMemoryCache cache)
{
this.cache = cache;
}
然后我们可以设置缓存:
Then we can set the cache with:
public IActionResult Index()
{
var list = new List<string>() { "lorem" };
this.cache.Set("MyKey", list, new MemoryCacheEntryOptions()); // Define options
return View();
}
(使用任何 选项正在设置)
(With any options being set)
并从缓存中读取:
public IActionResult About()
{
ViewData["Message"] = "Your application description page.";
var list = new List<string>();
if (!this.cache.TryGetValue("MyKey", out list)) // read also .Get("MyKey") would work
{
// go get it, and potentially cache it for next time
list = new List<string>() { "lorem" };
this.cache.Set("MyKey", list, new MemoryCacheEntryOptions());
}
// do stuff with
return View();
}
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