Public Channels#

Public channels are the simplest way to broadcast real-time updates. No authentication is required — anyone with your application key can subscribe and receive events.

Use Cases#

• Live notifications
• Real-time dashboards
• Stock prices, sports scores
• System status updates

Subscribing#

const channel = pusher.subscribe('my-channel')

channel.bind('update', (data) => {
  console.log('Received:', data)
})

Channel Names#

Channel names must:

• Be between 1 and 164 characters, including any prefix
• Only contain: a-z, A-Z, 0-9, _, =, @, ,, ., ;, and -

The # character and reserved encrypted/cache channel prefixes are not available for application-created public channels.

Unsubscribing#

pusher.unsubscribe('my-channel')