56 lines
1.7 KiB
C#
56 lines
1.7 KiB
C#
using Microsoft.Extensions.Caching.Memory;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace HuanMeng.DotNetCore.CacheHelper
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{
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/// <summary>
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/// 内存缓存帮助类
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/// </summary>
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public class MemoryCacheHelper
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{
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public static MemoryCache cache = new MemoryCache(new MemoryCacheOptions());
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/// <summary>
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/// 获取缓存
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="cacheName"></param>
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/// <returns></returns>
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public static T? GetCache<T>(string cacheName) where T : class, new()
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{
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return cache.TryGetValue(cacheName, out var value) ? value as T : null;
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}
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/// <summary>
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/// 设置缓存
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/// </summary>
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/// <param name="cacheName"></param>
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/// <param name="val"></param>
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/// <param name="cacheTime">单位秒，默认1小时</param>
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public static void SetCache(string cacheName, object val, int cacheTime = 21000)
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{
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//数据量渐渐大了，每次因为很多都是同时缓存 所以在这里分流一下
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if (cacheTime == 21000)
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cacheTime = new Random().Next(21000, 43200);
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cache.Set(cacheName, val, TimeSpan.FromSeconds(cacheTime));
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}
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/// <summary>
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/// 删除缓存
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/// </summary>
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/// <param name="cacheName"></param>
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public static void DelCache(string? cacheName = null)
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{
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if (!string.IsNullOrEmpty(cacheName))
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cache.Remove(cacheName);
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else
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cache.Dispose();
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}
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}
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}
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