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trends: read directly from the tags table instead of doing an inner join on events

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Alex Gleason 2024-07-29 15:33:16 -05:00
parent ece18c9bd8
commit 48a4e30e38
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GPG key ID: 7211D1F99744FBB7
2 changed files with 11 additions and 6 deletions
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6
src/db/migrations/029_tag_queries.ts
View file

@ -54,6 +54,12 @@ export async function up(db: Kysely<any>): Promise<void> {
.ifNotExists()
.columns(['value', 'name', 'kind', 'pubkey', 'created_at desc', 'event_id asc'])
.execute();
await db.schema
.createIndex('nostr_tags_trends')
.on('nostr_tags')
.ifNotExists()
.columns(['created_at', 'name', 'kind'])
.execute();
}
export async function down(db: Kysely<any>): Promise<void> {

11
src/trends.ts
View file

@ -22,24 +22,23 @@ export async function getTrendingTagValues(
): Promise<{ value: string; authors: number; uses: number }[]> {
let query = kysely
.selectFrom('nostr_tags')
.innerJoin('nostr_events', 'nostr_events.id', 'nostr_tags.event_id')
.select(({ fn }) => [
'nostr_tags.value',
fn.agg<number>('count', ['nostr_events.pubkey']).distinct().as('authors'),
fn.agg<number>('count', ['nostr_tags.pubkey']).distinct().as('authors'),
fn.countAll<number>().as('uses'),
])
.where('nostr_tags.name', 'in', tagNames)
.groupBy('nostr_tags.value')
.orderBy((c) => c.fn.agg('count', ['nostr_events.pubkey']).distinct(), 'desc');
.orderBy((c) => c.fn.agg('count', ['nostr_tags.pubkey']).distinct(), 'desc');
if (filter.kinds) {
query = query.where('nostr_events.kind', 'in', filter.kinds);
query = query.where('nostr_tags.kind', 'in', filter.kinds);
}
if (typeof filter.since === 'number') {
query = query.where('nostr_events.created_at', '>=', filter.since);
query = query.where('nostr_tags.created_at', '>=', filter.since);
}
if (typeof filter.until === 'number') {
query = query.where('nostr_events.created_at', '<=', filter.until);
query = query.where('nostr_tags.created_at', '<=', filter.until);
}
if (typeof filter.limit === 'number') {
query = query.limit(filter.limit);