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+using System.Collections.Generic;
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+using System.Threading;
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+using System.Threading.Tasks;
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+using Library;
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+
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+namespace MySystem
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+{
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+ public class KxsRedisDbconn
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+ {
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+ public readonly static KxsRedisDbconn Instance = new KxsRedisDbconn();
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+ public static CSRedis.CSRedisClient csredis;
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+ private KxsRedisDbconn()
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+ {
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+ }
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+
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+ #region 设置单个字段
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+ public bool Set(string key, object value)
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+ {
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+ return RedisHelper.Set(key, value);
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+ // return false;
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+ }
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+ #endregion
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+
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+ #region 整数累加
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+ public long AddInt(string key, long value = 1)
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+ {
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+ return RedisHelper.IncrBy(key, value);
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+ // return 0;
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+ }
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+ #endregion
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+
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+ #region 数字累加
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+ public decimal AddNumber(string key, decimal value = 1)
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+ {
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+ return RedisHelper.IncrByFloat(key, value);
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+ // return 0;
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+ }
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+ #endregion
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+
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+ #region 获取单个字段
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+ public T Get<T>(string key)
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+ {
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+ return RedisHelper.Get<T>(key);
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+ }
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+ #endregion
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+
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+ #region 设置散列字段
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+ public bool HSet(string key, string field, object value)
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+ {
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+ return RedisHelper.HSet(key, field, value);
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+ // return false;
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+ }
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+ #endregion
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+
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+ #region 散列整数累加
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+ public long HAddInt(string key, string field, long value = 1)
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+ {
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+ return RedisHelper.HIncrBy(key, field, value);
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+ // return 0;
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+ }
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+ #endregion
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+
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+ #region 散列数字累加
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+ public decimal HAddNumber(string key, string field, decimal value = 1)
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+ {
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+ return RedisHelper.HIncrByFloat(key, field, value);
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+ // return 0;
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+ }
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+ #endregion
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+
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+ #region 获取散列元素
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+ public T HGet<T>(string key, string field)
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+ {
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+ return RedisHelper.HGet<T>(key, field);
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+ }
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+ #endregion
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+
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+ #region 获取散列所有元素
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+ public Dictionary<string, T> HGetAll<T>(string key)
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+ {
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+ return RedisHelper.HGetAll<T>(key);
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+ }
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+ #endregion
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+
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+ #region 添加列表对象
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+ public long AddList(string key, object value)
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+ {
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+ return RedisHelper.LPush(key, value);
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+ // return 0;
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+ }
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+ public long AddList(string key, object[] value)
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+ {
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+ return RedisHelper.LPush(key, value);
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+ // return 0;
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+ }
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+ public T RPop<T>(string key)
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+ {
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+ return RedisHelper.RPop<T>(key);
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+ }
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+ #endregion
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+
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+ #region 添加集合对象
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+ public long SAdd(string key, object value)
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+ {
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+ return RedisHelper.SAdd(key, value);
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+ // return 0;
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+ }
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+ public long SAdd(string key, object[] value)
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+ {
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+ return RedisHelper.SAdd(key, value);
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+ // return 0;
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+ }
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+ #endregion
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+
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+ #region 获取集合对象
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+ public T[] SGetList<T>(string key)
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+ {
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+ return RedisHelper.SMembers<T>(key);
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+ }
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+ #endregion
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+
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+ #region 修改列表对象
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+ public bool SetList(string key, int index, object value)
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+ {
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+ long itemindex = RedisHelper.LLen(key) - index - 1;
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+ return RedisHelper.LSet(key, itemindex, value);
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+ // return false;
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+ }
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+ #endregion
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+
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+ #region 获取列表
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+ public List<T> GetList<T>(string key, int pageNum = 1, int pageSize = 10)
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+ {
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+ int start = (pageNum - 1) * pageSize;
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+ int end = start + pageSize - 1;
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+ string[] list = RedisHelper.LRange(key, start, end);
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+ List<T> lists = new List<T>();
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+ foreach (string record in list)
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+ {
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+ lists.Add(Newtonsoft.Json.JsonConvert.DeserializeObject<T>(record));
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+ }
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+ return lists;
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+ }
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+ #endregion
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+
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+ #region 移除列表
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+ public long RemoveFromList(string key, object value, int count = 1)
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+ {
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+ return RedisHelper.LRem(key, count, value);
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+ }
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+ #endregion
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+
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+ #region 添加排序列表对象
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+ public long AddSort(string key, object value, decimal score)
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+ {
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+ return RedisHelper.ZAdd(key, (score, value));
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+ // return 0;
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+ }
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+ #endregion
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+
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+ #region 获取排序列表
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+ public List<T> GetSort<T>(string key, int pageNum = 1, int pageSize = 10)
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+ {
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+ int start = (pageNum - 1) * pageSize;
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+ int end = start + pageSize;
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+ string[] list = RedisHelper.ZRangeByScore(key, start, end);
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+ List<T> lists = new List<T>();
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+ foreach (string record in list)
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+ {
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+ lists.Add(Newtonsoft.Json.JsonConvert.DeserializeObject<T>(record));
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+ }
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+ return lists;
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+ }
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+ public List<T> GetSortDesc<T>(string key, int pageNum = 1, int pageSize = 10)
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+ {
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+ int start = (pageNum - 1) * pageSize;
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+ int end = start + pageSize;
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+ string[] list = RedisHelper.ZRevRangeByScore(key, start, end);
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+ List<T> lists = new List<T>();
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+ foreach (string record in list)
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+ {
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+ lists.Add(Newtonsoft.Json.JsonConvert.DeserializeObject<T>(record));
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+ }
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+ return lists;
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+ }
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+ #endregion
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+
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+ public bool Remove(string key, long start, long end)
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+ {
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+ return RedisHelper.LTrim(key, start, end);
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+ }
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+
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+ public bool RemoveTop(string key, long count)
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+ {
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+ return RedisDbconn.Instance.Remove(key, count, RedisDbconn.Instance.Count(key) - 1); ;
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+ }
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+
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+ public long Count(string key)
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+ {
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+ return RedisHelper.LLen(key);
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+ }
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+
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+ public void Clear(string pattern)
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+ {
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+ string[] keys = RedisHelper.Keys(pattern);
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+ RedisHelper.Del(keys);
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+ }
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+
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+ public string[] GetKeys(string pattern)
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+ {
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+ string[] keys = RedisHelper.Keys(pattern);
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+ return keys;
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+ }
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+
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+ public void SetExpire(string key, int expire)
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+ {
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+ RedisHelper.Expire(key, expire); //秒为单位
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+ }
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+
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+ public bool Exists(string key)
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+ {
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+ return RedisHelper.Exists(key);
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+ }
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+
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+ public long AddRightList(string key, object value)
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+ {
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+ return RedisHelper.RPush(key, value);
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+ // return 0;
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+ }
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+ /// <summary>
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+ /// 锁key
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+ /// </summary>
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+ private readonly string lockKey = "RedisLock";
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+
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+ /// <summary>
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+ /// 锁的过期秒数
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+ /// </summary>
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+ private readonly int lockTime = 20;
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+
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+ /// <summary>
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+ /// 续命线程取消令牌
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+ /// </summary>
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+ private CancellationTokenSource tokenSource = new CancellationTokenSource();
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+
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+ /// <summary>
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+ /// 获取锁
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+ /// </summary>
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+ /// <param name="requestId">请求id保证释放锁时的客户端和加锁的客户端一致</param>
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+ /// <returns></returns>
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+ public bool GetLock(string requestId)
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+ {
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+ //设置key 设置过期时间20s
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+ // while (true)
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+ // {
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+ // //设置key Redis2.6.12以上版本,可以用set获取锁。set可以实现setnx和expire,这个是原子操作
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+ // if (RedisHelper.Set(lockKey, requestId, lockTime, RedisHelper.RedisExistence.Nx))
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+ // {
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+ // //设置成功后开启子线程为key续命
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+ // CreateThredXm();
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+ // return true;
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+ // }
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+ // }
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+ return true;
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+ }
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+
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+ /// <summary>
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+ /// 为锁续命(防止业务操作时间大于锁自动释放时间,锁被自动释放掉)
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+ /// </summary>
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+ void CreateThredXm()
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+ {
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+ Task.Run(() =>
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+ {
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+ while (true)
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+ {
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+ Thread.Sleep(10);
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+ //外部取消 退出子线程
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+ if (tokenSource.IsCancellationRequested)
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+ {
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+ return;
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+ }
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+ //查询key还有多少秒释放
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+ var Seconds = RedisHelper.PTtl(lockKey) / 1000;
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+ //key还剩1/3秒时重设过期时间
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+ if (Seconds < (lockTime / 3))
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+ {
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+ //小于5秒则自动 重设过期时间
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+ RedisHelper.Expire(lockKey, lockTime);
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+ }
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+ }
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+ }, tokenSource.Token);
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+ }
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+
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+ /// <summary>
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+ /// 释放锁操作
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+ /// </summary>
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+ /// <param name="requestId">请求id保证释放锁时的客户端和加锁的客户端一致</param>
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+ public void ReleaseLock(string requestId)
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+ {
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+ //这里使用Lua脚本保证原子性操作
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+ // string script = "if redis.call('get', KEYS[1]) == ARGV[1] then " +
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+ // "return redis.call('del', KEYS[1]) " +
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+ // "else return 0 end";
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+ // RedisHelper.Eval(script, lockKey, requestId);
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+ // //取消续命线程
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+ // tokenSource.Cancel();
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+ }
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+ }
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+}
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