我们在应用程序中使用 C1 Azure Redis 缓存。最近,我们在 GET 操作上遇到了大量超时。
According to this article ,可能的解决方案之一是实现 ConnectionMultiplexer 对象池。
Another possible solution is to use a pool of ConnectionMultiplexer objects in your client, and choose the “least loaded” ConnectionMultiplexer when sending a new request. This should prevent a single timeout from causing other requests to also timeout.
使用 C# 实现 ConnectionMultiplexer 对象池会是什么样子?
编辑:
最佳答案
您还可以使用 StackExchange.Redis.Extensions 以更简单的方式完成此操作
示例代码:
using StackExchange.Redis;
using StackExchange.Redis.Extensions.Core.Abstractions;
using StackExchange.Redis.Extensions.Core.Configuration;
using System;
using System.Collections.Concurrent;
using System.Linq;
namespace Pool.Redis
{
/// <summary>
/// Provides redis pool
/// </summary>
public class RedisConnectionPool : IRedisCacheConnectionPoolManager
{
private static ConcurrentBag<Lazy<ConnectionMultiplexer>> connections;
private readonly RedisConfiguration redisConfiguration;
public RedisConnectionPool(RedisConfiguration redisConfiguration)
{
this.redisConfiguration = redisConfiguration;
Initialize();
}
public IConnectionMultiplexer GetConnection()
{
Lazy<ConnectionMultiplexer> response;
var loadedLazys = connections.Where(lazy => lazy.IsValueCreated);
if (loadedLazys.Count() == connections.Count)
{
response = connections.OrderBy(x => x.Value.GetCounters().TotalOutstanding).First();
}
else
{
response = connections.First(lazy => !lazy.IsValueCreated);
}
return response.Value;
}
private void Initialize()
{
connections = new ConcurrentBag<Lazy<ConnectionMultiplexer>>();
for (int i = 0; i < redisConfiguration.PoolSize; i++)
{
connections.Add(new Lazy<ConnectionMultiplexer>(() => ConnectionMultiplexer.Connect(redisConfiguration.ConfigurationOptions)));
}
}
public void Dispose()
{
var activeConnections = connections.Where(lazy => lazy.IsValueCreated).ToList();
activeConnections.ForEach(connection => connection.Value.Dispose());
Initialize();
}
}
}
其中RedisConfiguration
是这样的:
return new RedisConfiguration()
{
AbortOnConnectFail = true,
Hosts = new RedisHost[] {
new RedisHost()
{
Host = ConfigurationManager.AppSettings["RedisCacheAddress"].ToString(),
Port = 6380
},
},
ConnectTimeout = Convert.ToInt32(ConfigurationManager.AppSettings["RedisTimeout"].ToString()),
Database = 0,
Ssl = true,
Password = ConfigurationManager.AppSettings["RedisCachePassword"].ToString(),
ServerEnumerationStrategy = new ServerEnumerationStrategy()
{
Mode = ServerEnumerationStrategy.ModeOptions.All,
TargetRole = ServerEnumerationStrategy.TargetRoleOptions.Any,
UnreachableServerAction = ServerEnumerationStrategy.UnreachableServerActionOptions.Throw
},
PoolSize = 50
};
关于c# - Azure Redis 缓存 - ConnectionMultiplexer 对象池,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29603890/