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Account billing and packages
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General
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Realtime API and client libraries
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Troubleshooting
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Channels
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REST API and client libraries
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Ably error codes
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Account and app setup and configuration
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Ably architecture, transports, and security
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Performance and Redundancy
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Push Notifications
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Integrations
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Migrating to Ably from an existing service
Can I be notified over HTTP when a channel is created or closed?
Yes, this is supported using WebHooks.
You can register for HTTP events to pushed to your servers using WebHooks whenever a channel is created (at least one person is subscribed to the channel globally), or closed (when there are no longer any subscribers on the channel).