Channel API Turndown

The Channel API creates a persistent connection between your application and Google servers, allowing your application to send messages to JavaScript clients in real time without the use of polling. This API is useful for applications that are designed to update users about new information immediately. You can find more information in the language specific docs (Java | Python | Go).

The Channel API did not scale well enough for the workloads it was intended for and so did not find wide adoption. Accordingly, support for the Channel API will be turned off on October 31, 2017.

Alternative products

You can use the Firebase Realtime Database to achieve superior realtime functionality in your application. Firebase is a more robust and customizable solution than the Channel API, and it allows communication with a broader set of clients. It currently supports Android, iOS, and apps, and web browser apps.

Migrating from the Channel API

See Using Firebase for realtime events on App Engine for information on replacing Channel API functionality with the Firebase Realtime Database.

Where to get help

If you run into any trouble migrating your application, and you have a support package, you can get help through your normal support channel. If you don't have a support package, you can get help through the support contact form.

Shutdown timetable

With any deprecation there is a follow-up decommission where the API or service is formally removed.

The following table lists the Channel API service shutdown (turndown) schedule:

Decommission Date Decommission Event
October 31, 2017 The Channel API will be permanently disabled.

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