Editing Firehose

A '''firehose,''' also called '''repository event stream''', is a real-time, one-directional event streaming API. It distributes record changes to authenticated clients, which clients use to synchronize records. In contrast to a traditional request-response web API, this model of disseminating changes enables real-time updates while reducing the request load on firehose providers.

[[Bluesky Social]] provides a firehose, commonly referred to as '''the firehose''', through their [[relay]] at <code>bsky.network</code>. It aggregates and streams all record changes from the Bluesky network and is used by different services, such as [[Feed generator|feed generators]] or [[Labeller|labellers]].

Starting in October of 2024, Bluesky has started offering an alternative to the firehose called [[Jetstream]].<ref>[https://docs.bsky.app/blog/jetstream "Introducing Jetstream"]. Bluesky. Retrieved March 12, 2025.</ref> It promises to use less bandwidth by allowing clients to preselect a subset of records to receive updates for. By using [[wikipedia:JSON|JSON]] instead of the binary encoding format [[wikipedia:CBOR|CBOR]], it is also more approchable for developers.

== References ==
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== External links ==

* [https://atproto.com/specs/sync#firehose AT Protocol specification: Firehose]