ptr.pet
at protocol indexer with flexible filtering, xrpc queries, and a cursor-backed event stream, built on fjall
at-protocol
atproto
indexer
rust
fjall
[docs] update readme
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README.md
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README.md
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## vs `tap`
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while [`tap`](https://github.com/bluesky-social/indigo/tree/main/cmd/tap) is designed primarily as a firehose consumer and relay, `hydrant` is flexible, it allows you to directly query the database for records, and it also provides an ordered view of events, allowing the use of a cursor to fetch events from a specific point in time.
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while [`tap`](https://github.com/bluesky-social/indigo/tree/main/cmd/tap) is designed as a firehose consumer and simply just propagates events while handling sync, `hydrant` is flexible, it allows you to directly query the database for records, and it also provides an ordered view of events, allowing the use of a cursor to fetch events from a specific point in time.
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### stream behavior
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`hydrant` implements the following XRPC endpoints under `/xrpc/`:
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#### `com.atproto.*`
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#### com.atproto.*
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the following are implemented currently:
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- `com.atproto.repo.getRecord`
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- `com.atproto.repo.listRecords`
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#### `systems.gaze.hydrant.*`
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#### systems.gaze.hydrant.*
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##### `systems.gaze.hydrant.countRecords`
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these are some non-standard XRPCs that might be useful.
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##### systems.gaze.hydrant.countRecords
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return the total number of stored records in a collection.
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