增加redis；

待处理流程中可以查看驳回的流程

Infrastructure/Cache/RedisCacheContext.cs

@@ -0,0 +1,59 @@
+using System;
+using Enyim.Caching;
+using Enyim.Caching.Memcached;
+using Microsoft.Extensions.Options;
+using StackExchange.Redis;
+
+namespace Infrastructure.Cache
+{
+    /// <summary>
+    /// 缓存redis实现
+    /// </summary>
+    public sealed class RedisCacheContext : ICacheContext
+    {
+        private ConnectionMultiplexer _conn { get; set; }
+        private IDatabase iDatabase { get; set; }
+
+        private AppSetting _appSettings;
+        public RedisCacheContext(IOptions<AppSetting> options)
+        {
+            _conn = ConnectionMultiplexer.Connect(options.Value.RedisConf);
+            iDatabase = _conn.GetDatabase();
+        }
+
+        public override T Get<T>(string key)
+        {
+            RedisValue value = iDatabase.StringGet(key);
+            if (!value.HasValue)
+            {
+                return default(T);
+            }
+            
+            if (typeof(T) == typeof(string))
+            {
+                return (T) Convert.ChangeType(value, typeof(T));
+            }
+            else
+            {
+                return JsonHelper.Instance.Deserialize<T>(value);
+            }
+        }
+
+        public override bool Set<T>(string key, T t, DateTime expire)
+        {
+            if (typeof(T) == typeof(string))
+            {
+                return iDatabase.StringSet(key, t.ToString(), expire-DateTime.Now);
+            }
+            else
+            {
+                return iDatabase.StringSet(key, JsonHelper.Instance.Serialize(t), expire - DateTime.Now);
+            }
+        }
+
+        public override bool Remove(string key)
+        {
+            return iDatabase.KeyDelete(key);
+        }
+    }
+}