forward

forward is a micro Go library that enables keyspace notifications on redis and listens to events, wraps them in a struct containing Data, Key and Type and makes them available for processing (eg. forwarding from Redis to RabbitMQ, Kinesis, Kafka etc.) Deletion and expiration events behave the same way, except the Data field is nil.

Checkout example/forwardtorabbitmq.go to see how data from redis is forwarded onto rabbitmq queues and then consumed.

Docs: https://godoc.org/github.com/techfort/forward

Usage

NewPubSub returns a pub sub object The Channel() methods returns an array of events containing the data, the type and the key of the redis data affected by an event.

To use forward you only need a few lines:

ps := forward.NewPubSub(forward.PubSubConfig{
		Addr:       v.GetString("REDIS_URL"),
		Pattern:    "*",
		KeyspaceID: 0,
})

events, errs := ps.Channel()

for e := range events {
  /*
  Example
  The following Redis operation: SET foo bar
  would generate an event which is a forward.RedisKV{Data:"bar", Key: "foo", Type: "string"}
  */
  //... your logic here...
}

Options to Config

Addr: address of the redis server/cluster
Pattern: string pattern for matching only keys containing the pattern and discarding the rest
KeyspaceID: the keyspace ID to subscribe to, but be mindful that redis clusters only allow ID 0, so you can omit this.