asp.net Core使用redis(StackExchange.Redis)

一、構成の追加(appsettings.json)

"Redis": {
    "Default": {
      "Connection": "127.0.0.1:6379,password=12345678",
      "InstanceName": "  :",
      "DefaultDB": 0
    }
  }

二、サービス依存の追加(Startup.cs)

public IServiceProvider ConfigureServices(IServiceCollection services)
{
   //redis  
   var section = Configuration.GetSection("Redis:Default");
   string _connectionString = section.GetSection("Connection").Value;//     
   string _instanceName = section.GetSection("InstanceName").Value; //    
   int _defaultDB = int.Parse(section.GetSection("DefaultDB").Value ?? "0"); //                
   services.AddSingleton(new RedisHelper(_connectionString, _instanceName, _defaultDB));
}

三、redisヘルプクラス(RedisHelper)

 public class RedisHelper : IDisposable
    {
        private string _connectionString; //     
        private string _instanceName; //    
        private int _defaultDB; //     
        private ConcurrentDictionary _connections;
        public RedisHelper(string connectionString, string instanceName, int defaultDB =0)
        {
            _connectionString = connectionString;
            _instanceName = instanceName;
            _defaultDB = defaultDB;
            _connections = new ConcurrentDictionary();
        }

        /// 

        ///   ConnectionMultiplexer
        /// 
        /// 
        private ConnectionMultiplexer GetConnect()
        {
            return _connections.GetOrAdd(_instanceName, p => ConnectionMultiplexer.Connect(_connectionString));
        }
        
        /// 

        ///      
        /// 
        /// 
        ///    0：     db  ，  config    
        /// 
        public IDatabase GetDatabase()
        {
            return GetConnect().GetDatabase(_defaultDB);
        }

        public IServer GetServer(string configName = null, int endPointsIndex = 0)
        {
            var confOption = ConfigurationOptions.Parse(_connectionString);
            return GetConnect().GetServer(confOption.EndPoints[endPointsIndex]);
        }

        public ISubscriber GetSubscriber(string configName = null)
        {
            return GetConnect().GetSubscriber();
        }

        public void Dispose()
        {
            if (_connections != null && _connections.Count > 0)
            {
                foreach (var item in _connections.Values)
                {
                    item.Close();
                }
            }
        }

四、コントローラでの使用

 public class RedisController : Controller
    {
        private readonly IDatabase _redis;
        public RedisController(RedisHelper client)
        {
            _redis = client.GetDatabase();
        }

        public IActionResult Index()
        {
            _redis.StringSet("TestRedis", "11111");
           string temp  =  _redis.StringGet("TestRedis");
            return View();
        }
    }