using Newtonsoft.Json; using RedLockNet.SERedis; using RedLockNet.SERedis.Configuration; using StackExchange.Redis; using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; namespace 秒杀系统 { public class RedisHelper { private static readonly string RedisHost = "127.0.0.1:6379"; private static readonly string RedisHost1 = "127.0.0.2:6379"; private static readonly string RedisPwd = "sa123456"; private static readonly int RedisDbIndex = 0; private static readonly object LockObject = new object(); private static ConnectionMultiplexer _connection; public static ConnectionMultiplexer Connection { get { if (_connection == null) { lock (LockObject) { if (_connection == null || !_connection.IsConnected) { var config = new ConfigurationOptions { AbortOnConnectFail = false, ConnectRetry = 10, ConnectTimeout = 5000, SyncTimeout = 5000, EndPoints = { { RedisHost } }, AllowAdmin = true, KeepAlive = 180, Password = RedisPwd }; _connection = ConnectionMultiplexer.Connect(config); //注册如下事件 _connection.ConnectionFailed += MuxerConnectionFailed; _connection.ErrorMessage += MuxerErrorMessage; _connection.InternalError += MuxerInternalError; } } } return _connection; } } public static RedLockFactory redLockFactory; public static RedLockFactory RedlockFactory { get { if (redLockFactory != null) return redLockFactory; var multiplexers = new List<RedLockMultiplexer>() { Connection }; var redlockFactory = RedLockFactory.Create(multiplexers); return redlockFactory; } } /// <summary> /// 获取redis的DB /// </summary> /// <returns></returns> private static IDatabase GetDatabase() { if (Connection == null || !Connection.IsConnected) { throw new Exception("redis连接有误"); } return Connection.GetDatabase(RedisDbIndex); } #region 记录redis的连接日志 /// <summary> /// 连接失败 ， 如果重新连接成功你将不会收到这个通知 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private static void MuxerConnectionFailed(object sender, ConnectionFailedEventArgs e) { } /// <summary> /// redis类库错误 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private static void MuxerInternalError(object sender, InternalErrorEventArgs e) { } /// <summary> /// 发生错误时 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private static void MuxerErrorMessage(object sender, RedisErrorEventArgs e) { } #endregion 记录redis的连接日志 #region String #region 同步方法 /// <summary> /// 保存单个key value /// </summary> /// <param name="key">Redis Key</param> /// <param name="value">保存的值</param> /// <param name="secondTimeout">过期时间</param> /// <returns></returns> public static bool StringSet(string key, string value, int secondTimeout) { return Do(db => db.StringSet(key, value, TimeSpan.FromSeconds(secondTimeout))); } /// <summary> /// 保存多个key value /// </summary> /// <param name="keyValues">键值对</param> /// <returns></returns> public static bool StringSet(List<KeyValuePair<RedisKey, RedisValue>> keyValues) { List<KeyValuePair<RedisKey, RedisValue>> newkeyValues = keyValues.Select(p => new KeyValuePair<RedisKey, RedisValue>(p.Key, p.Value)).ToList(); return Do(db => db.StringSet(newkeyValues.ToArray())); } /// <summary> /// 保存一个对象 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="obj"></param> /// <param name="secondTimeout"></param> /// <returns></returns> public static bool StringSet<T>(string key, T obj, int secondTimeout) { var json = ConvertJson(obj); return Do(db => db.StringSet(key, json, TimeSpan.FromSeconds(secondTimeout))); } /// <summary> /// 获取单个key的值 /// </summary> /// <param name="key">Redis Key</param> /// <returns></returns> public static string StringGet(string key) { return Do(db => db.StringGet(key)); } /// <summary> /// 获取一个key的对象 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static T StringGet<T>(string key) { return Do(db => ConvertObj<T>(db.StringGet(key))); } /// <summary> /// 为数字增长val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>增长后的值</returns> public static long StringIncrement(string key, long val = 1) { return Do(db => db.StringIncrement(key, val)); } /// <summary> /// 为数字减少val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>减少后的值</returns> public static long StringDecrement(string key, long val = 1) { return Do(db => db.StringDecrement(key, val)); } /// <summary> /// 为数字增长val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>增长后的值</returns> public static double StringIncrement(string key, double val = 1) { return Do(db => db.StringIncrement(key, val)); } /// <summary> /// 为数字减少val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>减少后的值</returns> public static double StringDecrement(string key, double val = 1) { return Do(db => db.StringDecrement(key, val)); } #endregion 同步方法 #region 异步方法 /// <summary> /// 保存单个key value /// </summary> /// <param name="key">Redis Key</param> /// <param name="value">保存的值</param> /// <param name="secondTimeout">过期时间</param> /// <returns></returns> public static async Task<bool> StringSetAsync(string key, string value, int secondTimeout) { return await Do(db => db.StringSetAsync(key, value, TimeSpan.FromSeconds(secondTimeout))); } /// <summary> /// 保存多个key value /// </summary> /// <param name="keyValues">键值对</param> /// <returns></returns> public static async Task<bool> StringSetAsync(List<KeyValuePair<RedisKey, RedisValue>> keyValues) { List<KeyValuePair<RedisKey, RedisValue>> newkeyValues = keyValues.Select(p => new KeyValuePair<RedisKey, RedisValue>(p.Key, p.Value)).ToList(); return await Do(db => db.StringSetAsync(newkeyValues.ToArray())); } /// <summary> /// 保存一个对象 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="obj"></param> /// <param name="secondTimeout"></param> /// <returns></returns> public static async Task<bool> StringSetAsync<T>(string key, T obj, int secondTimeout) { string json = ConvertJson(obj); return await Do(db => db.StringSetAsync(key, json, TimeSpan.FromSeconds(secondTimeout))); } /// <summary> /// 获取单个key的值 /// </summary> /// <param name="key">Redis Key</param> /// <returns></returns> public static async Task<string> StringGetAsync(string key) { return await Do(db => db.StringGetAsync(key)); } /// <summary> /// 获取一个key的对象 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static async Task<T> StringGetAsync<T>(string key) { string result = await Do(db => db.StringGetAsync(key)); return ConvertObj<T>(result); } /// <summary> /// 为数字增长val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>增长后的值</returns> public static async Task<long> StringIncrementAsync(string key, long val = 1) { return await Do(db => db.StringIncrementAsync(key, val)); } /// <summary> /// 为数字减少val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>减少后的值</returns> public static async Task<long> StringDecrementAsync(string key, long val = 1) { return await Do(db => db.StringDecrementAsync(key, val)); } /// <summary> /// 为数字增长val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>增长后的值</returns> public static async Task<double> StringIncrementAsync(string key, double val = 1) { return await Do(db => db.StringIncrementAsync(key, val)); } /// <summary> /// 为数字减少val /// </summary> /// <param name="key"></param> /// <param name="val">可以为负</param> /// <returns>减少后的值</returns> public static async Task<double> StringDecrementAsync(string key, double val = 1) { return await Do(db => db.StringDecrementAsync(key, val)); } #endregion 异步方法 #endregion String #region Hash #region 同步方法 /// <summary> /// 判断某个数据是否已经被缓存 /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <returns></returns> public static bool HashExists(string key, string dataKey) { return Do(db => db.HashExists(key, dataKey)); } /// <summary> /// 存储数据到hash表 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="t"></param> /// <returns></returns> public static bool HashSet<T>(string key, string dataKey, T t) { return Do(db => { string json = ConvertJson(t); return db.HashSet(key, dataKey, json); }); } /// <summary> /// 移除hash中的某值 /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <returns></returns> public static bool HashDel(string key, string dataKey) { return Do(db => db.HashDelete(key, dataKey)); } /// <summary> /// 移除hash中的多个值 /// </summary> /// <param name="key"></param> /// <param name="dataKeys"></param> /// <returns></returns> public static long HashDel(string key, List<RedisValue> dataKeys) { return Do(db => db.HashDelete(key, dataKeys.ToArray())); } /// <summary> /// 从hash表获取数据 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="dataKey"></param> /// <returns></returns> public static T HashGet<T>(string key, string dataKey) { return Do(db => { if (!HashExists(key, dataKey)) return default(T); string value = db.HashGet(key, dataKey); return ConvertObj<T>(value); }); } /// <summary> /// 为数字增长val /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="val">可以为负</param> /// <returns>增长后的值</returns> public static double HashIncrement(string key, string dataKey, double val = 1) { return Do(db => db.HashIncrement(key, dataKey, val)); } /// <summary> /// 为数字减少val /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="val">可以为负</param> /// <returns>减少后的值</returns> public static double HashDecrement(string key, string dataKey, double val = 1) { return Do(db => db.HashDecrement(key, dataKey, val)); } /// <summary> /// 获取hashkey所有Redis key /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static List<T> HashKeys<T>(string key) { return Do(db => { RedisValue[] values = db.HashKeys(key); return ConvetList<T>(values); }); } /// <summary> /// 获取hashkey所有Redis key /// </summary> /// <typeparam name="T"></typeparam> /// <returns></returns> public static List<T> HashGetAll<T>(string key) { var values = Do(db => db.HashGetAll(key)); return ConvetList<T>(values); } #endregion 同步方法 #region 异步方法 /// <summary> /// 判断某个数据是否已经被缓存 /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <returns></returns> public static async Task<bool> HashExistsAsync(string key, string dataKey) { return await Do(db => db.HashExistsAsync(key, dataKey)); } /// <summary> /// 存储数据到hash表 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="t"></param> /// <returns></returns> public static async Task<bool> HashSetAsync<T>(string key, string dataKey, T t) { return await Do(db => { string json = ConvertJson(t); return db.HashSetAsync(key, dataKey, json); }); } /// <summary> /// 移除hash中的某值 /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <returns></returns> public static async Task<bool> HashDelAsync(string key, string dataKey) { return await Do(db => db.HashDeleteAsync(key, dataKey)); } /// <summary> /// 移除hash中的多个值 /// </summary> /// <param name="key"></param> /// <param name="dataKeys"></param> /// <returns></returns> public static async Task<long> HashDelAsync(string key, List<RedisValue> dataKeys) { return await Do(db => db.HashDeleteAsync(key, dataKeys.ToArray())); } /// <summary> /// 从hash表获取数据 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="dataKey"></param> /// <returns></returns> public static async Task<T> HashGeAsync<T>(string key, string dataKey) { string value = await Do(db => db.HashGetAsync(key, dataKey)); return ConvertObj<T>(value); } /// <summary> /// 为数字增长val /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="val">可以为负</param> /// <returns>增长后的值</returns> public static async Task<double> HashIncrementAsync(string key, string dataKey, double val = 1) { return await Do(db => db.HashIncrementAsync(key, dataKey, val)); } /// <summary> /// 为数字减少val /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="val">可以为负</param> /// <returns>减少后的值</returns> public static async Task<long> HashDecrementAsync(string key, string dataKey, long val = 1) { return await Do(db => db.HashDecrementAsync(key, dataKey, val)); } /// <summary> /// 为数字增长val /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="val">可以为负</param> /// <returns>增长后的值</returns> public static async Task<long> HashIncrementAsync(string key, string dataKey, long val = 1) { return await Do(db => db.HashIncrementAsync(key, dataKey, val)); } /// <summary> /// 为数字减少val /// </summary> /// <param name="key"></param> /// <param name="dataKey"></param> /// <param name="val">可以为负</param> /// <returns>减少后的值</returns> public static async Task<double> HashDecrementAsync(string key, string dataKey, double val = 1) { return await Do(db => db.HashDecrementAsync(key, dataKey, val)); } /// <summary> /// 获取hashkey所有Redis key /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static async Task<List<T>> HashKeysAsync<T>(string key) { RedisValue[] values = await Do(db => db.HashKeysAsync(key)); return ConvetList<T>(values); } /// <summary> /// 获取hashkey所有Redis key /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static async Task<List<T>> HashGetAllAsync<T>(string key) { var values = await Do(db => db.HashGetAllAsync(key)); return ConvetList<T>(values); } #endregion 异步方法 #endregion Hash #region List #region 同步方法 /// <summary> /// 移除指定ListId的内部List的值 /// </summary> /// <param name="key"></param> /// <param name="value"></param> public static void ListRemove<T>(string key, T value) { Do(db => db.ListRemove(key, ConvertJson(value))); } /// <summary> /// 获取指定key的List /// </summary> /// <param name="key"></param> /// <returns></returns> public static List<T> ListRange<T>(string key) { return Do(redis => { var values = redis.ListRange(key); return ConvetList<T>(values); }); } /// <summary> /// 入队 /// </summary> /// <param name="key"></param> /// <param name="value"></param> public static void ListRightPush<T>(string key, T value) { Do(db => db.ListRightPush(key, ConvertJson(value))); } /// <summary> /// 出队 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static T ListRightPop<T>(string key) { return Do(db => { var value = db.ListRightPop(key); return ConvertObj<T>(value); }); } /// <summary> /// 入栈 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="value"></param> public static void ListLeftPush<T>(string key, T value) { Do(db => db.ListLeftPush(key, ConvertJson(value))); } /// <summary> /// 出栈 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static T ListLeftPop<T>(string key) { return Do(db => { var value = db.ListLeftPop(key); return ConvertObj<T>(value); }); } /// <summary> /// 获取集合中的数量 /// </summary> /// <param name="key"></param> /// <returns></returns> public static long ListLength(string key) { return Do(redis => redis.ListLength(key)); } #endregion 同步方法 #region 异步方法 /// <summary> /// 移除指定ListId的内部List的值 /// </summary> /// <param name="key"></param> /// <param name="value"></param> public static async Task<long> ListRemoveAsync<T>(string key, T value) { return await Do(db => db.ListRemoveAsync(key, ConvertJson(value))); } /// <summary> /// 获取指定key的List /// </summary> /// <param name="key"></param> /// <returns></returns> public static async Task<List<T>> ListRangeAsync<T>(string key) { var values = await Do(redis => redis.ListRangeAsync(key)); return ConvetList<T>(values); } /// <summary> /// 入队 /// </summary> /// <param name="key"></param> /// <param name="value"></param> public static async Task<long> ListRightPushAsync<T>(string key, T value) { return await Do(db => db.ListRightPushAsync(key, ConvertJson(value))); } /// <summary> /// 出队 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static async Task<T> ListRightPopAsync<T>(string key) { var value = await Do(db => db.ListRightPopAsync(key)); return ConvertObj<T>(value); } /// <summary> /// 入栈 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <param name="value"></param> public static async Task<long> ListLeftPushAsync<T>(string key, T value) { return await Do(db => db.ListLeftPushAsync(key, ConvertJson(value))); } /// <summary> /// 出栈 /// </summary> /// <typeparam name="T"></typeparam> /// <param name="key"></param> /// <returns></returns> public static async Task<T> ListLeftPopAsync<T>(string key) { var value = await Do(db => db.ListLeftPopAsync(key)); return ConvertObj<T>(value); } /// <summary> /// 获取集合中的数量 /// </summary> /// <param name="key"></param> /// <returns></returns> public static async Task<long> ListLengthAsync(string key) { return await Do(redis => redis.ListLengthAsync(key)); } #endregion 异步方法 #endregion List #region SortedSet 有序集合 #region 同步方法 /// <summary> /// 添加 /// </summary> /// <param name="key"></param> /// <param name="value"></param> /// <param name="score"></param> public static bool SortedSetAdd<T>(string key, T value, double score) { return Do(redis => redis.SortedSetAdd(key, ConvertJson<T>(value), score)); } /// <summary> /// 删除 /// </summary> /// <param name="key"></param> /// <param name="value"></param> public static bool SortedSetRemove<T>(string key, T value) { return Do(redis => redis.SortedSetRemove(key, ConvertJson(value))); } /// <summary> /// 获取全部 /// </summary> /// <param name="key"></param> /// <returns></returns> public static List<T> SortedSetRangeByRank<T>(string key) { return Do(redis => { var values = redis.SortedSetRangeByRank(key); return ConvetList<T>(values); }); } /// <summary> /// 获取集合中的数量 /// </summary> /// <param name="key"></param> /// <returns></returns> public static long SortedSetLength(string key) { return Do(redis => redis.SortedSetLength(key)); } #endregion 同步方法 #region 异步方法 /// <summary> /// 添加 /// </summary> /// <param name="key"></param> /// <param name="value"></param> /// <param name="score"></param> public static async Task<bool> SortedSetAddAsync<T>(string key, T value, double score) { return await Do(redis => redis.SortedSetAddAsync(key, ConvertJson<T>(value), score)); } /// <summary> /// 删除 /// </summary> /// <param name="key"></param> /// <param name="value"></param> public static async Task<bool> SortedSetRemoveAsync<T>(string key, T value) { return await Do(redis => redis.SortedSetRemoveAsync(key, ConvertJson(value))); } /// <summary> /// 获取全部 /// </summary> /// <param name="key"></param> /// <returns></returns> public static async Task<List<T>> SortedSetRangeByRankAsync<T>(string key) { var values = await Do(redis => redis.SortedSetRangeByRankAsync(key)); return ConvetList<T>(values); } /// <summary> /// 获取集合中的数量 /// </summary> /// <param name="key"></param> /// <returns></returns> public static async Task<long> SortedSetLengthAsync(string key) { return await Do(redis => redis.SortedSetLengthAsync(key)); } #endregion 异步方法 #endregion SortedSet 有序集合 #region key /// <summary> /// 删除单个key /// </summary> /// <param name="key">redis key</param> /// <returns>是否删除成功</returns> public static bool KeyDel(string key) { return Do(db => db.KeyDelete(key)); } /// <summary> /// 删除多个key /// </summary> /// <param name="keys">rediskey</param> /// <returns>成功删除的个数</returns> public static long KeyDel(List<string> keys) { return Do(db => db.KeyDelete(ConvertRedisKeys(keys))); } /// <summary> /// 判断key是否存储 /// </summary> /// <param name="key">redis key</param> /// <returns></returns> public static bool KeyExists(string key) { return Do(db => db.KeyExists(key)); } /// <summary> /// 设置Key的时间 /// </summary> /// <param name="key">redis key</param> /// <param name="secondTimeout"></param> /// <returns></returns> public static bool KeyExpire(string key, int secondTimeout) { return Do(db => db.KeyExpire(key, TimeSpan.FromSeconds(secondTimeout))); } #endregion key #region 辅助方法 private static T Do<T>(Func<IDatabase, T> func) { try { var database = GetDatabase(); return func(database); } catch (Exception ex) { return default(T); } } private static string ConvertJson<T>(T value) { string result = value is string ? value.ToString() : JsonConvert.SerializeObject(value); return result; } private static T ConvertObj<T>(RedisValue value) { if (value.IsNullOrEmpty) { return default(T); } return JsonConvert.DeserializeObject<T>(value.ToString()); } private static List<T> ConvetList<T>(RedisValue[] values) { List<T> result = new List<T>(); foreach (var item in values) { var model = ConvertObj<T>(item); result.Add(model); } return result; } private static RedisKey[] ConvertRedisKeys(List<string> redisKeys) { return redisKeys.Select(redisKey => (RedisKey)redisKey).ToArray(); } private static List<T> ConvetList<T>(HashEntry[] values) { List<T> result = new List<T>(); foreach (var item in values) { if (!item.Value.IsNullOrEmpty) { var model = ConvertObj<T>(item.Value); result.Add(model); } } return result; } #endregion 辅助方法 public static IBatch CreateBatch() { return GetDatabase().CreateBatch(); } public static ITransaction CreateTransaction() { return GetDatabase().CreateTransaction(); } //使用Keys *模糊匹配Key public static List<string> GetMatchKeys(string key) { var result = (string[])GetDatabase().ScriptEvaluate(LuaScript.Prepare("return redis.call('KEYS',@keypattern)"), new { keypattern = key }); return result.ToList(); } //使用SCAN模糊匹配Key public static List<string> ScanMatchKeys(string key) { var result = (string[])GetDatabase().ScriptEvaluate( LuaScript.Prepare("local dbsize=redis.call('dbsize') local res=redis.call('scan',0,'match',KEYS[1],'count',dbsize) return res[2]"), new RedisKey[] { key }); return result.ToList(); } } }
from ：https://www.cnblogs.com/yxlblogs/p/9134554.html