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This article mainly explains the "simple use of redis database", the content of the explanation is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "the simple use of redis database"!

Using Newtonsoft.Json

Using StackExchange.Redis

Using System

Using System.Collections.Generic

Using System.Configuration

Using System.Linq

Using System.Text

Using System.Threading.Tasks

Namespace ConsoleApp

{

/ / /

/ Redis operation class

/ / /

Public class RedisHelper

{

/ / /

/ / connection string

/ / /

Private static readonly string ConnectionString = ConfigurationManager.AppSettings ["RedisConnectionString"]

/ / /

/ lock

/ / /

Private readonly object _ lock = new object ()

/ / /

/ connection object

/ / /

Private volatile IConnectionMultiplexer _ connection

/ / /

/ / Database

/ / /

Private IDatabase _ db

Public RedisHelper ()

{

_ connection = ConnectionMultiplexer.Connect (ConnectionString)

_ db = GetDatabase ()

}

/ / /

/ get the connection

/ / /

/ / /

Protected IConnectionMultiplexer GetConnection ()

{

If (_ connection! = null & & _ connection.IsConnected)

{

Return _ connection

}

Lock (_ lock)

{

If (_ connection! = null & & _ connection.IsConnected)

{

Return _ connection

}

If (_ connection! = null)

{

_ connection.Dispose ()

}

_ connection = ConnectionMultiplexer.Connect (ConnectionString)

}

Return _ connection

}

/ / /

/ / get the database

/ / /

/ / /

/ / /

Public IDatabase GetDatabase (int? Db = null)

{

/ / return _ connection.GetDatabase (db?-1)

Return GetConnection () .GetDatabase (db?-1)

}

/ / /

/ Settings

/ / /

/ key

/ / value

/ time

Public virtual void Set (string key, object data, int cacheTime)

{

If (data = = null)

{

Return

}

Var entryBytes = Serialize (data)

Var expiresIn = TimeSpan.FromMinutes (cacheTime)

_ db.StringSet (key, entryBytes, expiresIn)

}

/ / /

/ / get the value according to the key

/ / /

/ / /

/ / /

/ / /

Public virtual T Get (string key)

{

Var rValue = _ db.StringGet (key)

If (! rValue.HasValue)

{

Return default (T)

}

Var result = Deserialize (rValue)

Return result

}

/ / /

/ / deserialization

/ / /

/ / /

/ / /

/ / /

Protected virtual T Deserialize (byte [] serializedObject)

{

If (serializedObject = = null)

{

Return default (T)

}

Var json = Encoding.UTF8.GetString (serializedObject)

Return JsonConvert.DeserializeObject (json)

}

/ / /

/ / determine whether it has been set up

/ / /

/ / /

/ / /

Public virtual bool IsSet (string key)

{

Return _ db.KeyExists (key)

}

/ / /

/ / Serialization

/ / /

/ / /

/ byte []

Private byte [] Serialize (object data)

{

Var json = JsonConvert.SerializeObject (data)

Return Encoding.UTF8.GetBytes (json)

}

}

}

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