multipleServers.md

Multiple Servers

Sometimes there are scenarios where you need to configure to different Redis servers and I don't mean Master or Slave, but different instances with different connection strings and different configuration.

This is possible starting from version 8 and you can do it in this way:

var configurations = new[]
        {
            new RedisConfiguration
            {
                AbortOnConnectFail = true,
                KeyPrefix = "MyPrefix__",
                Hosts = new[] { new RedisHost { Host = "localhost", Port = 6379 } },
                AllowAdmin = true,
                ConnectTimeout = 5000,
                Database = 0,
                PoolSize = 5,
                IsDefault = true
            },
            new RedisConfiguration
            {
                AbortOnConnectFail = true,
                KeyPrefix = "MyPrefix__",
                Hosts = new[] { new RedisHost { Host = "localhost", Port = 6389 } },
                AllowAdmin = true,
                ConnectTimeout = 5000,
                Database = 0,
                PoolSize = 2,
                Name = "Secndary Instance"
            }
        };

        services.AddStackExchangeRedisExtensions<SystemTextJsonSerializer>(configurations);

Here the important things are the properties IsDefault and Name

When you use IRedisDatabase you get the default connection but, if you want to connect to another one you can retrieve it using its name:

public class MyClass
{
    private readonly IRedisClientFactory clientFactory;
    
    public MyClass(IRedisClientFactory clientFactory)
    {
        this.clientFactory = clientFactory;
    }
    
    public Task MyMethod()
    {
        var redisClient = clientFactory.GetRedisClient("Secndary Instance");
        
        // do your stuff here
    }
}