StackExchange. Redis RedisHelper. cs, stackexchange. redis

StackExchange. Redis RedisHelper. cs, stackexchange. redis

From ServiceStack. Redis V4 to V3, I have heard of StackExchange before. Finally, I made up my mind to change it !!! I found a StackExchangeHelper. cs address on the Internet and forgot it.

One problem is found: Different namespaces of different projects may encounter an error in deserialization of the same object. If it is changed to Json, it will be OK. The Code is as follows:

Using My. log; using StackExchange. redis; using System. collections. generic; using System. configuration; using System. data; using System. IO; using System. linq; using System. net; using System. runtime. serialization. formatters. binary; using Newtonsoft. json; namespace My. redis {// <summary> ///// </summary> public static class RedisHelper {private static readonly string Coonstr = ConfigurationMana Ger. connectionStrings ["RedisExchangeHosts"]. connectionString; private static object _ locker = new Object (); private static ConnectionMultiplexer _ instance = null; // <summary> // return the connected instance, /// </summary> public static ConnectionMultiplexer Instance {get {if (_ instance = null) {lock (_ locker) {if (_ instance = null |! _ Instance. isConnected) {_ instance = ConnectionMultiplexer. connect (Coonstr) ;}}// register the following Event _ instance. connectionFailed + = MuxerConnectionFailed; _ instance. connectionRestored + = MuxerConnectionRestored; _ instance. errorMessage + = MuxerErrorMessage; _ instance. configurationChanged + = MuxerConfigurationChanged; _ instance. hashSlotMoved + = MuxerHashSlotMoved; _ instance. internalError + = MuxerInternalError; Return _ instance ;}} static RedisHelper () {}/// <summary> /// obtain a connection instance /// </summary> /// <returns> </returns> public static IDatabase GetDatabase () {return Instance. getDatabase ();} /// <summary> /// expiration time /// </summary> /// <param name = "Min"> minutes </param> /// <returns> </returns> private static TimeSpan ExpireTimeSpan (double Min) {bool bl = bool. parse (ConfigurationManager. appSettings ["UseRedis"] ); If (bl) {return TimeSpan. fromMinutes (Min);} else {return TimeSpan. fromMilliseconds (1) ;}/// <summary> /// clear all caches containing specific characters /// </summary> public static void RemoveSpeStr (string keyStr) {List <string> listKeys = GetAllKeys (); foreach (string k in listKeys) {if (k. contains (keyStr) {Remove (k );}}} /// <summary> /// determine whether the cached data of this key exists in the cache. // </summary> /// <param name = "key"> </ param> // <ret Urns> </returns> public static bool Exists (string key) {return GetDatabase (). keyExists (key ); // you can call it directly} // <summary> // remove the cache of the specified key /// </summary> /// <param name = "key"> </ param> // <returns> </returns> public static bool Remove (string key) {if (Exists (key) {return GetDatabase (). keyDelete (key) ;}return false ;} /// <summary> /// Set /// </summary> /// <typeparam name = "T"> type </typeparam> /// <par Am name = "key"> key </param> /// <param name = "t"> value </param> /// <param name = "timeout"> expired in minutes </param> /// <returns> </returns> public static bool Set <T> (string key, T t, double minOut = 60*3) {return GetDatabase (). stringSet (key, Serialize (t), ExpireTimeSpan (minOut ));} /// <summary> /// Get /// </summary> /// <typeparam name = "T"> </typeparam> /// <param name =" key "> </param> // <returns> </returns> public Static T Get <T> (string key) {return Deserialize <T> (GetDatabase (). stringGet (key);} // <summary> // DataSet cache // </summary> public static bool SetData (string key, DataSet ds, double minOut = 60*3) {return GetDatabase (). stringSet (key, Serialize (ds), ExpireTimeSpan (minOut ));} /// <summary> /// get DataSet /// </summary> public static DataSet GetDataSet (string key) {return Deserialize <DataSet> (GetDatabase (). stringGet (key);} // <summary> // refresh cache // </summary> public static void FlushAll () {var endpoints = Instance. getEndPoints (); var server = Instance. getServer (endpoints. first (); server. flushDatabase (); // to wipe a single database, 0 by default // server. flushAllDatabases (); // to wipe all databases} // <summary> /// obtain all cache key values /// </summary> /// <returns> </returns> public static List <string> GetAllKeys () {List <string> lstKey = new List <string> (); var endpoints = Instance. getEndPoints (); var server = Instance. getServer (endpoints. first (); var keys = server. keys (); foreach (var key in keys) {lstKey. add (key) ;}return lstKey ;}// jsonstatic string JsonSerialize (object o) {If (o = null) {return null;} return JsonConvert. serializeObject (o);} static T JsonDeserialize <T> (string json) {if (json = null) {return default (T);} return JsonConvert. deserializeObject <T> (json );} /// <summary> /// serialize the object /// </summary> /// <param name = "o"> </param> /// <returns> </returns> 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> /// deserialization object /// </summary> /// <typeparam name = "T"> </typeparam> /// <param name = "stream"> </param> // <returns> </returns> 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 ;}} /// <summary> /// when the configuration is changed /// </summary> /// <param name = "sender"> </param> /// <param name = "e"> </param> private static void MuxerConfigurationChanged (object sender, endPointEven TArgs e) {LogHelper. logExceRun ("Configuration changed:" + e. endPoint, new Exception ());} /// <summary> /// when an error occurs /// </summary> /// <param name = "sender"> </param> /// <param name = "e"> </param> private static void MuxerErrorMessage (object sender, redisErrorEventArgs e) {LogHelper. logExceRun ("ErrorMessage:" + e. message, new Exception ();} // <summary> // error before the connection is re-established /// </summary> /// <param n Ame = "sender"> </param> // <param name = "e"> </param> private static void MuxerConnectionRestored (object sender, ConnectionFailedEventArgs e) {LogHelper. logExceRun ("ConnectionRestored:" + e. endPoint, new Exception ();} // <summary> // connection failed, if the connection is successfully reconnected, you will not receive this notification /// </summary> /// <param name = "sender"> </param> /// <param name =" e "> </param> private static void MuxerConnectionFailed (object sender, co NnectionFailedEventArgs e) {LogHelper. LogExceRun ("reconnect: Endpoint failed:" + e. EndPoint + "," + e. FailureType + (e. Exception = null? "": ("," + E. exception. message), new Exception ());} /// <summary> /// change the cluster /// </summary> /// <param name = "sender"> </param> /// <param name = "e"> </param> private static void MuxerHashSlotMoved (object sender, hashSlotMovedEventArgs e) {LogHelper. logExceRun ("HashSlotMoved: NewEndPoint" + e. newEndPoint + ", OldEndPoint" + e. oldEndPoint, new Exception ());} /// <summary> // redis class library error // </summary> /// <param name = "sender"> </param> // <param name = "e"> </param> private static void MuxerInternalError (object sender, internalErrorEventArgs e) {LogHelper. logExceRun ("InternalError: Message" + e. exception. message, new Exception ());} /// <summary> /// the GetServer method receives an EndPoint class or a key-value pair that uniquely identifies a server. // sometimes you need to specify a specific command for a single server // /use IServer to use all shell commands, for example: // DateTime lastSave = server. lastSave (); // ClientInfo [] clients = server. clientList (); // if an error is reported after the connection string is added, allowAdmin = true; /// </summary> /// <returns> </returns> public static IServer GetServer (string host, int port) {IServer server = Instance. getServer (host, port); return server ;} /// <summary> /// obtain all endpoints /// </summary> /// <returns> </returns> public static EndPoint [] GetEndPoints () {EndPoint [] endpoints = Instance. getEndPoints (); return endpoints ;}}}