go-redis/redis · error

redis: ChannelWithSubscriptions can't be called after Channe

Error message

redis: ChannelWithSubscriptions can't be called after Channel

What it means

Error "redis: ChannelWithSubscriptions can't be called after Channel" thrown in go-redis/redis.

Source

Thrown at pubsub.go:603

// with specified buffer size.
//
// Deprecated: use Channel(WithChannelSize(size)), remove in v9.
func (c *PubSub) ChannelSize(size int) <-chan *Message {
	return c.Channel(WithChannelSize(size))
}

// ChannelWithSubscriptions is like Channel, but message type can be either
// *Subscription or *Message. Subscription messages can be used to detect
// reconnections.
//
// ChannelWithSubscriptions can not be used together with Channel or ChannelSize.
func (c *PubSub) ChannelWithSubscriptions(opts ...ChannelOption) <-chan interface{} {
	c.chOnce.Do(func() {
		c.allCh = newChannel(c, opts...)
		c.allCh.initAllChan()
	})
	if c.allCh == nil {
		err := fmt.Errorf("redis: ChannelWithSubscriptions can't be called after Channel")
		panic(err)
	}
	return c.allCh.allCh
}

func (c *PubSub) processPendingPushNotificationWithReader(ctx context.Context, cn *pool.Conn, rd *proto.Reader) error {
	// Only process push notifications for RESP3 connections with a processor
	if c.opt.Protocol != 3 || c.pushProcessor == nil {
		return nil
	}

	// Create handler context with client, connection pool, and connection information
	handlerCtx := c.pushNotificationHandlerContext(cn)
	return c.pushProcessor.ProcessPendingNotifications(ctx, handlerCtx, rd)
}

func (c *PubSub) pushNotificationHandlerContext(cn *pool.Conn) push.NotificationHandlerContext {
	// PubSub doesn't have a client or connection pool, so we pass nil for those

View on GitHub (pinned to 36d97525cd)

Solutions

1. Use only Channel on this PubSub instance once it has been called
2. Create a new PubSub to switch APIs

When it happens

Trigger: Thrown at pubsub.go:603 when the library encounters an invalid state.

Common situations: Decide the consumption model at subscription setup, not mid-stream.

AI-assisted analysis of go-redis/redis@36d97525cd (2026-08-06). Data as JSON: /data/errors/547b6a47cfd06e0e.json. Report an issue: GitHub.