Http级别缓存助手类（ASP.Net Core）
标签：collect sed key value tac add rom sum res
用于http级别缓存，防止在一次http请求中查询相同数据
///
/// 使用HttpContext的暂存对象存储要被缓存的信息
///
public class HTTPCacheManager
{
private readonly IHttpContextAccessor _httpContextAccessor;
public HTTPCacheManager(IHttpContextAccessor httpContextAccessor)
{
this._httpContextAccessor = httpContextAccessor;
}
///
/// Gets a key/value collection that can be used to share data within the scope of this request
///
protected virtual IDictionary GetItems()
{
return this._httpContextAccessor.HttpContext?.Items;
}
public virtual object Get(string key)
{
object result = null;
var items = this.GetItems();
if (items != null)
{
result = items[key];
}
return result;
}
///
/// Get a cached item. If it‘s not in the cache yet, then load and cache it
///
/// Type of cached item
/// The cached value associated with the specified key
public virtual T Get(string key)
{
T result = default(T);
var items = this.GetItems();
if (items != null)
{
result = (T)this.Get(key);
}
return result;
}
///
/// Adds the specified key and object to the cache
///
///
/// Gets a value indicating whether the value associated with the specified key is cached
///
/// True if item already is in cache; otherwise false
public virtual bool IsSet(string key)
{
bool result = false;
var items = this.GetItems();
if (items != null)
{
result = items[key] != null;
}
return result;
}
///
/// Removes the value with the specified key from the cache
///
///
/// Removes items by key pattern
///
///
/// Clear all cache data
///
public virtual void Clear()
{
var items = this.GetItems();
if (items != null)
{
items.Clear();
}
}
}
Http级别缓存助手类（ASP.Net Core）
标签：collect sed key value tac add rom sum res
原文地址：https://www.cnblogs.com/fanfan-90/p/13587414.html
评论