mirror of
https://github.com/nostr-protocol/nips.git
synced 2024-11-09 22:09:06 -05:00
32 lines
1.1 KiB
Markdown
32 lines
1.1 KiB
Markdown
NIP-45
|
|
======
|
|
|
|
Event Counts
|
|
--------------
|
|
|
|
`draft` `optional` `author:staab`
|
|
|
|
Relays may support the `COUNT` verb, which provides a mechanism for obtaining event counts.
|
|
|
|
## Motivation
|
|
|
|
Some queries a client may want to execute against connected relays are prohibitively expensive, for example, in order to retrieve follower counts for a given pubkey, a client must query all kind-3 events referring to a given pubkey and count them. The result may be cached, either by a client or by a separate indexing server as an alternative, but both options erode the decentralization of the network by creating a second-layer protocol on top of Nostr.
|
|
|
|
## 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).
|
|
|
|
Counts are returned using a `COUNT` response in the form `{count: <integer>}`. Relays may use probabilistic counts to reduce compute requirements.
|
|
|
|
Examples:
|
|
|
|
```
|
|
# Followers count
|
|
["COUNT", "", {kinds: [3], '#p': [<pubkey>]}]
|
|
["COUNT", "", {count: 238}]
|
|
|
|
# Count posts and reactions
|
|
["COUNT", "", {kinds: [1, 7], authors: [<pubkey>]}]
|
|
["COUNT", "", {count: 5}]
|
|
```
|