Support for Redis Multi-Node Setup in Kubernetes #8901

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  EngincanV created 14 days ago

  Support Team .NET Developer

  Hi, here are the answers for your questions:

  1-) Does the system natively support Redis Cluster Mode for distributed caching and event bus communication?

  ABP's redis package (Volo.Abp.Caching.StackExchangeRedis) uses the Microsoft.Extensions.Caching.StackExchangeRedis package and it should support Redis Cluster as long as the proper connection string is provided for distributed caching.

  For our event bus providers please see https://abp.io/docs/latest/framework/infrastructure/event-bus/distributed#providers

  2-) Is any custom logic required for handling multiple Redis nodes?

  If you're using a single Redis instance or Sentinel Mode, no custom logic is required as far as I know. However, if you're using Redis Cluster Mode, you should:

  • Ensure that the connection string includes all cluster nodes.

  • Set abortConnect=false to allow automatic failover handling.

  • Consider using a cluster-aware Redis library if advanced failover handling is needed.

  3-) How does the system handle failover in case one of the Redis nodes becomes unavailable?

  StackExchange.Redis will attempt to reconnect to available nodes automatically, but it does not natively support Redis Cluster failover in an optimal way.

  If you're running in Redis Cluster Mode, you need to handle reconnections properly in your configuration to avoid interruptions in caching or event handling.

  4-) Could you provide a sample configuration for integrating Redis in a multi-node Kubernetes environment?

  Since this is not fully related to ABP, rather than it's related to Redis configuration, I don't have a sample configuration for that.

  But, in your appsettings.json, a configuration like below should work:

  "Redis": {
    "Configuration": "node1:6379,node2:6379,node3:6379,abortConnect=false"
  }
  

  Set abortConnect=false to allow automatic failover handling.

  or you can configure RedisCacheOption in your module as below:

          Configure<RedisCacheOptions>(options =>
          {
              options.ConfigurationOptions = new ConfigurationOptions
              {
                  EndPoints = { "node1:6379", "node2:6379", "node3:6379" },
                  AbortOnConnectFail = false,
                  ConnectRetry = 5
              };
          });
  

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