良い答えが得られなかったので、この解決策を思いつきました(BTWは@Simonと@Alexに答えてくれてありがとう!)
参考までに、コミュニティの皆さんと共有したいと思います。もちろん、修正をいただければ幸いです。
using System;
using System.Net.Sockets;
using BookSleeve;
namespace Redis
{
public sealed class RedisConnectionGateway
{
private const string RedisConnectionFailed = "Redis connection failed.";
private RedisConnection _connection;
private static volatile RedisConnectionGateway _instance;
private static object syncLock = new object();
private static object syncConnectionLock = new object();
public static RedisConnectionGateway Current
{
get
{
if (_instance == null)
{
lock (syncLock)
{
if (_instance == null)
{
_instance = new RedisConnectionGateway();
}
}
}
return _instance;
}
}
private RedisConnectionGateway()
{
_connection = getNewConnection();
}
private static RedisConnection getNewConnection()
{
return new RedisConnection("127.0.0.1" /* change with config value of course */, syncTimeout: 5000, ioTimeout: 5000);
}
public RedisConnection GetConnection()
{
lock (syncConnectionLock)
{
if (_connection == null)
_connection = getNewConnection();
if (_connection.State == RedisConnectionBase.ConnectionState.Opening)
return _connection;
if (_connection.State == RedisConnectionBase.ConnectionState.Closing || _connection.State == RedisConnectionBase.ConnectionState.Closed)
{
try
{
_connection = getNewConnection();
}
catch (Exception ex)
{
throw new Exception(RedisConnectionFailed, ex);
}
}
if (_connection.State == RedisConnectionBase.ConnectionState.Shiny)
{
try
{
var openAsync = _connection.Open();
_connection.Wait(openAsync);
}
catch (SocketException ex)
{
throw new Exception(RedisConnectionFailed, ex);
}
}
return _connection;
}
}
}
}