RedisRepository 分享和纠错

一.   写在前面

毕业工作后，今天终于能回家了，回想了一些这半年来所做的内容，总是觉得还停留在那么基础的水平 ，在解决各种问题的过程中，自己的创新思路比较少，靠搜索来的比较多 。不想做16年的总结了 ，希望17年能学更多的我爱的技术，看更多的开源代码，能学到更多的设计思想和代码思路，能再更新这两年来对代码的理解。

这篇分享，主要是弥补我之前RedisRepository的不足。

半年前由于我StackExchange.Redis文档阅读不足，所分享的RedisRepository有所错误。下面列举我的主要错误：

错误1，没有单例化ConnectionMultiplexer Redis连接对象，并且我天真的以为给单例对象加锁，在并发情况下，会限制了Redis的性能。

错误2，在主从情况下，我以为在发生手动切换的时候，我们要订阅切换事件，并在事件发生后，动态改变连接对象指向的Endpoint。

当我再一次仔细阅读文档时，才明白我的错误，这是一篇迟到的修正，但是我自用的repository自我感觉还是有很多不足之处，所以我真的需要老司机的指点和建议。

修正1，Redis连接对象创建的代价很大，并且单例加锁并不会影响Redis性能，因为在发生网络请求的期间，连接对象并没有在等待中。

修正2，Redis主从时，在哨兵切换主从关系后，StackExchange.Redis会为我们识别新的主从，不需要我们做任何操作。

目前为止我还有两个疑问。

疑问1，在看文档后没有明确结果。当做主从读写分离时,  我们在Endpoint Collection集合中添加多个节点就会自动读写分离？还是说需要 我们在读取命令的方法中指定CommandFlags.PreferSlave？  我认为是后者吧？所以我在我所有的读取方法都指定了PreferSlave。    老司机们怎么说？

疑问2，我使用LuaScript.Prepare(lua)后再Load出来，执行lua总是无效果，并且LuaScript.GetCachedScriptCount()为0. 不过我直接使用ScriptEvaluateAsync却是好用的，老司机如果有好的例子，希望老司机给些指导或者分享。

二.   代码结构，仅供参考

结构大概就是这样，RedisAsyncHelper下的所有类都是部分类，他们的类名称是RedisHelper。他们共同实现了IRedisHelper的接口，并且留下了详细的注释。

同步版本和异步版本的目录结构是一样的。

三.   预备阶段

CommonHelper中的两个帮助类：

RedisInnerTypeHelper.cs

using StackExchange.Redis;
using System.Collections.Generic;
using System.Linq;
namespace Fantasy.RedisRepository.CommonHelper
{
internal class RedisInnerTypeHelper
{
public static List<T> RedisValuesToGenericList<T>(RedisValue[] redisValues)
{
var result = new List<T>();
redisValues.ToList().ForEach(r => result.Add(SerializeHelper.Deserialize<T>(r)));
return result;
}
public static RedisValue[] GenericListToRedisValues<T>(List<T> values)
{
var redisValues = new List<RedisValue>();
values.ForEach(v => redisValues.Add(SerializeHelper.Serialize(values)));
return redisValues.ToArray();
}
public static RedisKey[] GenericListToRedisKeys(List<string> keys)
{
var redisKeys = new List<RedisKey>();
keys.ForEach(k => redisKeys.Add(k));
return redisKeys.ToArray();
}
}
}

SerializeHelper.cs

using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
namespace Fantasy.RedisRepository.CommonHelper
{
internal static class SerializeHelper
{
/// <summary>
/// 字节数组序列化
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
internal static byte[] Serialize(object o)
{
if (o == null)
{
return null;
}
BinaryFormatter binaryFormatter = new BinaryFormatter();
using (MemoryStream memoryStream = new MemoryStream())
{
binaryFormatter.Serialize(memoryStream, o);
byte[] objectDataAsStream = memoryStream.ToArray();
return objectDataAsStream;
}
}
/// <summary>
/// 字节数组反序列化
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="stream"></param>
/// <returns></returns>
internal static T Deserialize<T>(byte[] stream)
{
if (stream == null)
{
return default(T);
}
BinaryFormatter binaryFormatter = new BinaryFormatter();
using (MemoryStream memoryStream = new MemoryStream(stream))
{
T result = (T)binaryFormatter.Deserialize(memoryStream);
return result;
}
}
}
}

Config中的配置类：

ConfigHelper.cs

using System;
using System.Configuration;
namespace Fantasy.RedisRepository.Config
{
internal class ConfigHelper
{
internal static T Get<T>(string appSettingsKey, T defaultValue)
{
string text = ConfigurationManager.AppSettings[appSettingsKey];
if (string.IsNullOrWhiteSpace(text))
return defaultValue;
try
{
var value = Convert.ChangeType(text, typeof(T));
return (T)value;
}
catch
{
return defaultValue;
}
}
}
}

RedisClientConfig.cs

namespace Fantasy.RedisRepository.Config
{
internal class RedisClientConfig
{
private static string _server = ConfigHelper.Get("RedisServer", "115.xx.xx.31");
/// <summary>
/// 节点IP
/// </summary>
public static string Server
{
get { return _server; }
set { _server = value; }
}
private static int _port = ConfigHelper.Get("RedisPort", 6380);
/// <summary>
/// 节点端口
/// </summary>
public static int Port
{
get { return _port; }
set { _port = value; }
}
private static string _slaveServer = ConfigHelper.Get("SlaveServer", "115.xx.xx.31");
/// <summary>
/// 节点IP
/// </summary>
public static string SlaveServer
{
get { return _slaveServer; }
set { _slaveServer = value; }
}
private static int _slavePort = ConfigHelper.Get("SlavePort", 6381);
/// <summary>
/// 节点端口
/// </summary>
public static int SlavePort
{
get { return _slavePort; }
set { _slavePort = value; }
}
private static string _auth = ConfigHelper.Get("RedisAuth", "fantasy..");
/// <summary>
/// 节点密码
/// </summary>
public static string RedisAuth
{
get { return _auth; }
set { _auth = value; }
}
private static int _defaultDatabase = ConfigHelper.Get("RedisDataBase", 0);
/// <summary>
/// redis默认0号库
/// </summary>
public static int DefaultDatabase
{
get { return _defaultDatabase; }
set { _defaultDatabase = value; }
}
private static int _connectTimeout = 10000;
public static int ConnectTimeout
{
get { return _connectTimeout; }
set { _connectTimeout = value; }
}
private static int _connectRetry = 3;
public static int ConnectRetry
{
get { return _connectRetry; }
set { _connectRetry = value; }
}
private static bool _preserveAsyncOrder = false;
public static bool PreserveAsyncOrder
{
get { return _preserveAsyncOrder; }
set { _preserveAsyncOrder = value; }
}
}
}

RedisConnection.cs

using Fantasy.RedisRepository.Config;
using StackExchange.Redis;
namespace Fantasy.RedisRepository
{
/// <summary>
/// Redis连接类
/// </summary>
public static class RedisConnection
{
private static ConnectionMultiplexer _connection;
private static readonly object SyncObject = new object();
/// <summary>
/// redis连接对象，单例加锁不影响性能
/// </summary>
public static ConnectionMultiplexer GenerateConnection
{
get
{
if (_connection == null || !_connection.IsConnected)
{
lock (SyncObject)
{
var configurationOptions = new ConfigurationOptions()
{
Password = RedisClientConfig.RedisAuth,
EndPoints =
{
{RedisClientConfig.Server, RedisClientConfig.Port},
{RedisClientConfig.SlaveServer, RedisClientConfig.SlavePort}
}
};
_connection = ConnectionMultiplexer.Connect(configurationOptions);
}
}
return _connection;
}
}
}
}

四.   RedisHelper

实际上就是做了层序列化包装而已。

IRedisHelper：

using System;
using StackExchange.Redis;
using System.Collections.Generic;
using System.Threading.Tasks;
namespace Fantasy.RedisRepository.RedisHelpers
{
/// <summary>
/// 异步方法接口 --Author 吴双 www.cnblogs.com/tdws
/// 存入数据均为方法内部序列化后的byte,所以取数据的时候需要反序列化时，请指定正确的数据类型
/// </summary>
public partial interface IRedisHelper
{
#region Redis数据类型―String
/// <summary>
/// 将任何数据以redis string存储
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <param name="timeout"></param>
/// <returns></returns>
Task<bool> StringSetAsync<T>(string key, T value, TimeSpan? timeout = null);
/// <summary>
/// 对数值进行减法操作，默认-1
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns>操作后的结果</returns>
Task<long> StringDecrementAsync(string key, long value = 1L);
/// <summary>
/// 对数值进行加法操作，默认+1
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns>操作后的结果</returns>
Task<long> StringIncrementAsync(string key, long value = 1L);
/// <summary>
/// 从redis string中以指定类型取出
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<T> StringGetAsync<T>(string key);
#endregion
#region Redis数据类型―Hash
/// <summary>
/// 向Hash key中存储任意类型任意值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="field"></param>
/// <param name="value"></param>
/// <returns>是否成功</returns>
Task<bool> HashSetAsync<T>(string key, string field, T value);
/// <summary>
/// 批量 向Hash key中存储任意类型任意值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="hashFields"></param>
/// <returns>无返回值</returns>
Task HashMultiSetAsync<T>(string key, Dictionary<string, T> hashFields);
/// <summary>
/// 对指定hash key中制定field做数量增加操作 默认自增1
/// 如果此操作前key不存在 则创建。 如果此操作前该field不存在或者非数字 则先被置0，再被继续操作
/// </summary>
/// <param name="key"></param>
/// <param name="field"></param>
/// <param name="incrCount"></param>
/// <returns>操作后的结果</returns>
Task<long> HashIncrementAsync(string key, string field, long incrCount = 1);
/// <summary>
/// 对指定hash key中制定field做数量增加操作 默认自减1
/// 如果此操作前key不存在 则创建。 如果此操作前该field不存在或者非数字 则先被置0，再被继续操作
/// </summary>
/// <param name="key"></param>
/// <param name="field"></param>
/// <param name="decrCount"></param>
/// <returns>操作后的结果</returns>
Task<long> HashDecrementAsync(string key, string field, long decrCount = 1);
/// <summary>
/// 从指定Hash中 删除指定field
/// 如果key或者field不存在，则false
/// </summary>
/// <param name="key"></param>
/// <param name="field"></param>
/// <returns>是否成功</returns>
Task<bool> HashDeleteFieldAsync(string key, string field);
/// <summary>
/// 从指定Hash key中 批量删除指定field
/// 如果key或者field不存在，则false
/// </summary>
/// <param name="key"></param>
/// <param name="fields"></param>
/// <returns>移除数量</returns>
Task<long> HashMultiDeleteFieldAsync(string key, List<string> fields);
/// <summary>
/// 从指定Hash key中获取指定field值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="field"></param>
/// <returns></returns>
Task<T> HashGetAsync<T>(string key, string field);
/// <summary>
/// 从指定Hash key中判断field是否存在
/// </summary>
/// <param name="key"></param>
/// <param name="field"></param>
/// <returns></returns>
Task<bool> HashFieldExistAsync(string key, string field);
/// <summary>
/// 获取指定Hash key中的所有field的值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<List<T>> HashValuesAsync<T>(string key);
/// <summary>
/// 获取指定Hash key中所有 field名称及其Value
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<Dictionary<string, T>> HashGetAllAsync<T>(string key);
/// <summary>
/// 获取指定Hash key中所有field
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
Task<List<string>> HashFieldsAsync(string key);
#endregion
#region Redis数据类型―List
/// <summary>
/// 在指定pivot后插入value, 如果pivot不存在，则返回-1, 如果key不存在，则返回0
/// 如果存在多个相同指定的的pivot,则插入第一个指定pivot后面.
/// 即链表从左向右查找，遇到指定pivot，则确定位置
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="pivot">list中的一个值</param>
/// <param name="value"></param>
/// <returns></returns>
Task<long> ListInsertAfterAsync<T>(string key, string pivot, T value);
/// <summary>
/// 在指定pivot前插入value, 如果pivot不存在，则返回-1, 如果key不存在，则返回0
/// 如果存在多个相同指定的的pivot,则插入第一个指定pivot前面.
/// 即链表从左向右查找，遇到指定pivot，则确定位置
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="pivot"></param>
/// <param name="value"></param>
/// <returns></returns>
Task<long> ListInsertBeforeAsync<T>(string key, string pivot, T value);
/// <summary>
/// 从链表左侧弹出第一个元素（弹出能获取到该元素并且被删除）
/// 如果key不存在 或者链表为空 则为null
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<T> ListLeftPopAsync<T>(string key);
/// <summary>
/// 从链表左侧增加一个元素,key不存在则被创建
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns>返回操作后的链表长度</returns>
Task<long> ListLeftPushAsync<T>(string key, T value);
/// <summary>
/// 从链表左侧批量增加元素，如果 a b c 则c会在链表左侧第一位 b第二位 a第三位
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="values"></param>
/// <returns>返回操作后的链表长度</returns>
Task<long> ListLeftMultiPushAsync<T>(string key, List<T> values);
/// <summary>
/// 获取链表长度，不存在key则为0
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<long> ListLengthAsync<T>(string key);
/// <summary>
/// 获取链表中所有数据，从左侧start开始到stop结束，从0―-1则认为获取全部，默认获取全部
/// start为负数则代表从链表右侧开始，-1为右侧第一位，-2为右侧第二位
/// start要小于stop,否则返回null
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="start"></param>
/// <param name="stop"></param>
/// <returns></returns>
Task<List<T>> ListRangeAsync<T>(string key, long start = 0L, long stop = -1L);
/// <summary>
/// 从链表中一处count数量的value. count大于0则从左至右，count小于0则从右至左，count=0则移除全部
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <param name="count"></param>
/// <returns></returns>
Task<long> ListRemoveAsync<T>(string key, T value, long count = 0L);
/// <summary>
/// 从右侧弹出第一个元素（弹出能获取到该元素并且被删除）
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<T> ListRightPopAsync<T>(string key);
/// <summary>
/// 从链表右侧加入元素，如果 rpush a b c 则c为右侧第一位 b第二位 c第三位
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
Task<long> ListRightPushAsync<T>(string key, T value);
/// <summary>
/// 从右侧批量插入，和左侧相反
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="values"></param>
/// <returns></returns>
Task<long> ListRightMultiPushAsync<T>(string key, List<T> values);
/// <summary>
/// 在链表指定索引处，插入元素
/// 正数索引从0开始，代表左侧。负数从-1开始 代表从右侧。-1为右侧第一位
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="index"></param>
/// <param name="value"></param>
/// <returns></returns>
Task ListSetByIndexAsync<T>(string key, int index, T value);
/// <summary>
/// 留下start到stop之间的数据。负数代表从右侧寻找 -1为右侧第一位
/// </summary>
/// <param name="key"></param>
/// <param name="start"></param>
/// <param name="stop"></param>
/// <returns></returns>
Task ListTrimAsync(string key, long start, long stop);
/// <summary>
/// 获取指定index的值，负数代表从右侧寻找 -1为右侧第一位
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="index"></param>
/// <returns></returns>
Task<T> ListGetByIndexAsync<T>(string key, long index);
#endregion
#region Redis数据类型―Set
/// <summary>
/// 向指定集合中增加一个元素
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
Task<bool> SetAddAsync<T>(string key, T value);
/// <summary>
/// 指定集合计算操作operation枚举，指定计算结果将存的目标destKey，指定需要参与计算的多个key
/// </summary>
/// <param name="operation"></param>
/// <param name="destKey"></param>
/// <param name="combineKeys"></param>
/// <returns></returns>
Task<long> SetCombineAndStoreAsync(SetOperation operation, string destKey, List<string> combineKeys);
/// <summary>
/// 指定集合计算操作operation枚举，指定需要参与计算的多个key
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="operation"></param>
/// <param name="combineKeys"></param>
/// <returns></returns>
Task<List<T>> SetCombineAsync<T>(SetOperation operation, List<string> combineKeys);
/// <summary>
/// 指定值是否存在于指定集合中
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
Task<bool> SetContainsAsync<T>(string key, T value);
/// <summary>
/// 获取指定集合中元素个数
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
Task<long> SetLengthAsync(string key);
/// <summary>
/// 获取指定集合中的所有元素
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
Task<List<T>> SetMembersAsync<T>(string key, T value);
/// <summary>
/// 从sourceKey移除指定value到目标distKey集合当中
/// 如果sourceKey存在指定value则返回true，否则不做任何操作返回false
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sourcekey"></param>
/// <param name="distKey"></param>
/// <param name="value"></param>
/// <returns></returns>
Task<bool> SetMoveAsync<T>(string sourcekey, string distKey, T value);
/// <summary>
/// 从指定集合当中随机取出一个元素
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<T> SetRandomMemberAsync<T>(string key);
/// <summary>
/// 从指定集合随机弹出（删除并获取）一个元素
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<T> SetPopAsync<T>(string key);
/// <summary>
/// 从集合中随机弹出（删除并获取）多个元素
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
Task<List<T>> SetRandomMembersAsync<T>(string key);
/// <summary>
/// 从集合中移除指定元素
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
Task<bool> SetRemoveAsync<T>(string key, T value);
/// <summary>
/// 从集合中批量移除元素
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="values"></param>
/// <returns></returns>
Task<long> SetMultiRemoveAsync<T>(string key, List<T> values);
#endregion
#region Redis数据类型―SortSet
#endregion
#region Redis Key操作
/// <summary>
/// 删除指定key
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
Task<bool> KeyDeleteAsync(string key);
/// <summary>
/// 设置key过期时间具体DateTime
/// </summary>
/// <param name="key"></param>
/// <param name="expireAt"></param>
/// <returns></returns>
Task<bool> KeyExpireAtAsync(string key, DateTime expireAt);
/// <summary>
/// 设置key在将来的timeout后过期（TimeSpan）
/// </summary>
/// <param name="key"></param>
/// <param name="timeout"></param>
/// <returns></returns>
Task<bool> KeyExpireInAsync(string key, TimeSpan timeout);
/// <summary>
/// key重命名
/// </summary>
/// <param name="key"></param>
/// <param name="newKey"></param>
/// <returns></returns>
Task<bool> KeyRenameAsync(string key, string newKey);
/// <summary>
/// 判断key是否已存在
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
Task<bool> KeyExistsAsync(string key);
#endregion
#region Redis Transcation
/// <summary>
/// 在事务中执行一系列redis命令。注意：在委托中的一系列命令的所有 值 都需要进行字节数组序列化
/// </summary>
/// <param name="ranOperations"></param>
/// <returns></returns>
Task<bool> DoInTranscationAsync(Action<ITransaction> ranOperations);
#endregion
Task<RedisResult> Test();
}
}

RedisHelper部分类RedisStringHelperAsync.cs

using System;
using Fantasy.RedisRepository.CommonHelper;
using StackExchange.Redis;
using System.Threading.Tasks;
namespace Fantasy.RedisRepository.RedisHelpers
{
/// <summary>
/// Redis异步操作类 String部分类
/// </summary>
internal partial class RedisHelper// : IRedisHelper
{
private static IDatabase _client;
internal RedisHelper()
{
_client = RedisConnection.GenerateConnection.GetDatabase();
}
#region String 写操作
/// <summary>
/// 将任何数据添加到redis中
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="value"></param>
/// <param name="timeout"></param>
/// <returns></returns>
public async Task<bool> StringSetAsync<T>(string key, T value, TimeSpan? timeout = null)
{
return await _client.StringSetAsync(key, SerializeHelper.Serialize(value), timeout);
}
public async Task<long> StringDecrementAsync(string key, long value = 1L)
{
return await _client.StringDecrementAsync(key, value);
}
public async Task<long> StringIncrementAsync(string key, long value = 1L)
{
return await _client.StringIncrementAsync(key, value);
}
#endregion
#region String 读操作
/// <summary>
/// 根据key获取指定类型数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <returns></returns>
public async Task<T> StringGetAsync<T>(string key)
{
return SerializeHelper.Deserialize<T>(await _client.StringGetAsync(key, CommandFlags.PreferSlave));
}
#endregion
}
}

RedisHelper部分类RedisHashHelperAsync.cs

using Fantasy.RedisRepository.CommonHelper;
using StackExchange.Redis;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Fantasy.RedisRepository.RedisHelpers
{
/// <summary>
/// Redis异步操作类 Hash部分类
/// </summary>
internal partial class RedisHelper
{
#region Hash 写操作
public async Task<bool> HashSetAsync<T>(string key, string field, T value)
{
return await _client.HashSetAsync(key, field, SerializeHelper.Serialize(value));
}
public async Task HashMultiSetAsync<T>(string key, Dictionary<string, T> hashFields)
{
List<HashEntry> entries = new List<HashEntry>();
hashFields.ToList().ForEach(d => entries.Add(new HashEntry(d.Key, SerializeHelper.Serialize(d.Value))));
await _client.HashSetAsync(key, entries.ToArray());
}
public async Task<long> HashIncrementAsync(string key, string field, long incrCount = 1)
{
return await _client.HashIncrementAsync(key, field, incrCount);
}
public async Task<long> HashDecrementAsync(string key, string field, long decrCount = 1)
{
return await _client.HashDecrementAsync(key, field, decrCount);
}
public async Task<bool> HashDeleteFieldAsync(string key, string field)
{
return await _client.HashDeleteAsync(key, field);
}
public async Task<long> HashMultiDeleteFieldAsync(string key, List<string> fields)
{
List<RedisValue> values = new List<RedisValue>();
fields.ForEach(f => values.Add(f));
return await _client.HashDeleteAsync(key, values.ToArray());
}
#endregion
#region Hash 读操作
/// <summary>
/// Redis 指定hash类型key中field是否存在
/// </summary>
/// <param name="key"></param>
/// <param name="field"></param>
/// <returns></returns>
public async Task<bool> HashFieldExistAsync(string key, string field)
{
return await _client.HashExistsAsync(key, field, CommandFlags.PreferSlave);
}
public async Task<List<string>> HashFieldsAsync(string key)
{
RedisValue[] values = await _client.HashKeysAsync(key, CommandFlags.PreferSlave);
return RedisInnerTypeHelper.RedisValuesToGenericList<string>(values);
}
public async Task<List<T>> HashValuesAsync<T>(string key)
{
var values = await _client.HashValuesAsync(key, CommandFlags.PreferSlave);
return RedisInnerTypeHelper.RedisValuesToGenericList<T>(values);
}
public async Task<T> HashGetAsync<T>(string key, string field)
{
return SerializeHelper.Deserialize<T>(await _client.HashGetAsync(key, field, CommandFlags.PreferSlave));
}
public async Task<Dictionary<string, T>> HashGetAllAsync<T>(string key)
{
HashEntry[] entries = await _client.HashGetAllAsync(key, CommandFlags.PreferSlave);
Dictionary<string, T> dic = new Dictionary<string, T>();
entries.ToList().ForEach(e => dic.Add(e.Name, SerializeHelper.Deserialize<T>(e.Value)));
return dic;
}
#endregion
}
}

RedisHelper部分类RedisListHelperAsync.cs

using Fantasy.RedisRepository.CommonHelper;
using StackExchange.Redis;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Fantasy.RedisRepository.RedisHelpers
{
/// <summary>
/// Redis异步操作类 Hash部分类
/// </summary>
internal partial class RedisHelper
{
#region Hash 写操作
public async Task<bool> HashSetAsync<T>(string key, string field, T value)
{
return await _client.HashSetAsync(key, field, SerializeHelper.Serialize(value));
}
public async Task HashMultiSetAsync<T>(string key, Dictionary<string, T> hashFields)
{
List<HashEntry> entries = new List<HashEntry>();
hashFields.ToList().ForEach(d => entries.Add(new HashEntry(d.Key, SerializeHelper.Serialize(d.Value))));
await _client.HashSetAsync(key, entries.ToArray());
}
public async Task<long> HashIncrementAsync(string key, string field, long incrCount = 1)
{
return await _client.HashIncrementAsync(key, field, incrCount);
}
public async Task<long> HashDecrementAsync(string key, string field, long decrCount = 1)
{
return await _client.HashDecrementAsync(key, field, decrCount);
}
public async Task<bool> HashDeleteFieldAsync(string key, string field)
{
return await _client.HashDeleteAsync(key, field);
}
public async Task<long> HashMultiDeleteFieldAsync(string key, List<string> fields)
{
List<RedisValue> values = new List<RedisValue>();
fields.ForEach(f => values.Add(f));
return await _client.HashDeleteAsync(key, values.ToArray());
}
#endregion
#region Hash 读操作
/// <summary>
/// Redis 指定hash类型key中field是否存在
/// </summary>
/// <param name="key"></param>
/// <param name="field"></param>
/// <returns></returns>
public async Task<bool> HashFieldExistAsync(string key, string field)
{
return await _client.HashExistsAsync(key, field, CommandFlags.PreferSlave);
}
public async Task<List<string>> HashFieldsAsync(string key)
{
RedisValue[] values = await _client.HashKeysAsync(key, CommandFlags.PreferSlave);
return RedisInnerTypeHelper.RedisValuesToGenericList<string>(values);
}
public async Task<List<T>> HashValuesAsync<T>(string key)
{
var values = await _client.HashValuesAsync(key, CommandFlags.PreferSlave);
return RedisInnerTypeHelper.RedisValuesToGenericList<T>(values);
}
public async Task<T> HashGetAsync<T>(string key, string field)
{
return SerializeHelper.Deserialize<T>(await _client.HashGetAsync(key, field, CommandFlags.PreferSlave));
}
public async Task<Dictionary<string, T>> HashGetAllAsync<T>(string key)
{
HashEntry[] entries = await _client.HashGetAllAsync(key, CommandFlags.PreferSlave);
Dictionary<string, T> dic = new Dictionary<string, T>();
entries.ToList().ForEach(e => dic.Add(e.Name, SerializeHelper.Deserialize<T>(e.Value)));
return dic;
}
#endregion
}
}

RedisLuaHelper.cs 这里打算装一些功能行lua脚本， 外部依然是传key一类的参数，这个不完整，只是个实例。

using StackExchange.Redis;
using System.Threading.Tasks;
namespace Fantasy.RedisRepository.RedisHelpers
{
internal partial class RedisHelper
{
public async Task<RedisResult> LuaMutilGetHash()
{
string lua = @"local result={}
for i, v in ipairs(KEYS) do
result[i] = redis.call('hgetall',v)
end
return result";
var res = await _client.ScriptEvaluateAsync(lua, new RedisKey[] { "people:1", "people:2", "people:3" });
var res1= LuaScript.GetCachedScriptCount();
return res;
}
}
}

关于Transcation的封装，我个人没有什么好的方法，提供了这样一个方法

public async Task<bool> DoInTranscationAsync(Action<ITransaction> runOperations)
{
var tran = RedisConnection.GenerateConnection.GetDatabase().CreateTransaction();
runOperations(tran);
return await tran.ExecuteAsync();
}

RedisFactory.cs

using Fantasy.RedisRepository.RedisHelpers;
namespace Fantasy.RedisRepository
{
public class RedisFactory
{
/// <summary>
/// 外部访问redis入口，暂时只暴露异步方法
/// </summary>
/// <returns></returns>
public static IRedisHelper CreateRedisRepository()
{
return new RedisHelper();
}
}
}