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speed hack hot page

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This commit is contained in:
keyan 2021-10-06 18:50:18 -07:00
parent 4d1b8bb11e
commit 5bd8025b2b
1 changed files with 21 additions and 1 deletions
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20
api/resolvers/item.js
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@ -48,6 +48,25 @@ export default {
LIMIT ${LIMIT}`, Number(userId), decodedCursor.time, decodedCursor.offset)
break
case 'hot':
// HACK we can speed hack the first hot page, by limiting our query to only
// the most recently created items so that the tables doesn't have to
// fully be computed
// if the offset is 0, we limit our search to posts from the last week
// if there are 21 items, return them ... if not do the unrestricted query
// instead of doing this we should materialize a view ... but this is easier for now
if (decodedCursor.offset === 0) {
items = await models.$queryRaw(`
${SELECT}
FROM "Item"
${timedLeftJoinSats(1)}
WHERE "parentId" IS NULL AND created_at <= $1 AND created_at > $3
${timedOrderBySats(1)}
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset, new Date(new Date() - 7))
}
if (decodedCursor.offset !== 0 || items.length < LIMIT) {
items = await models.$queryRaw(`
${SELECT}
FROM "Item"
@ -56,6 +75,7 @@ export default {
${timedOrderBySats(1)}
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset)
}
break
default:
items = await models.$queryRaw(`