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feat: support counting by filters

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codytseng 2023-04-12 23:18:22 +08:00
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@ -14,18 +14,26 @@ Some queries a client may want to execute against connected relays are prohibiti
## Filters and return values ## Filters and return values
This NIP defines a verb called `COUNT`, which accepts a subscription id and a filter as specified in [NIP 01](01.md). This NIP defines a verb called `COUNT`, which accepts a subscription id and filters as specified in [NIP 01](01.md).
```
["COUNT", <subscription_id>, <filters JSON>...]
```
Counts are returned using a `COUNT` response in the form `{count: <integer>}`. Relays may use probabilistic counts to reduce compute requirements. Counts are returned using a `COUNT` response in the form `{count: <integer>}`. Relays may use probabilistic counts to reduce compute requirements.
```
["COUNT", <subscription_id>, {"count": <integer>}]
```
Examples: Examples:
``` ```
# Followers count # Followers count
["COUNT", "", {kinds: [3], '#p': [<pubkey>]}] ["COUNT", <subscription_id>, {"kinds": [3], "#p": [<pubkey>]}]
["COUNT", "", {count: 238}] ["COUNT", <subscription_id>, {"count": 238}]
# Count posts and reactions # Count posts and reactions
["COUNT", "", {kinds: [1, 7], authors: [<pubkey>]}] ["COUNT", <subscription_id>, {"kinds": [1, 7], "authors": [<pubkey>]}]
["COUNT", "", {count: 5}] ["COUNT", <subscription_id>, {"count": 5}]
``` ```