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speed hack notification query

This commit is contained in:
keyan 2021-10-06 20:20:59 -07:00
parent 5bd8025b2b
commit 782dc78652
3 changed files with 26 additions and 7 deletions
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21
api/resolvers/notifications.js
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@ -42,13 +42,18 @@ export default {
date_trunc('hour', "Vote".created_at) order by created_at desc; date_trunc('hour', "Vote".created_at) order by created_at desc;
*/ */
// HACK to make notifications faster, we only return a limited sub set of the unioned
// queries ... we only ever need at most LIMIT+current offset in the child queries to
// have enough items to return in the union
let notifications = await models.$queryRaw(` let notifications = await models.$queryRaw(`
SELECT ${ITEM_FIELDS}, "Item".created_at as "sortTime", NULL as "earnedSats", (SELECT ${ITEM_FIELDS}, "Item".created_at as "sortTime", NULL as "earnedSats",
false as mention false as mention
FROM "Item" FROM "Item"
JOIN "Item" p ON "Item"."parentId" = p.id JOIN "Item" p ON "Item"."parentId" = p.id
WHERE p."userId" = $1 WHERE p."userId" = $1
AND "Item"."userId" <> $1 AND "Item".created_at <= $2 AND "Item"."userId" <> $1 AND "Item".created_at <= $2
ORDER BY "Item".created_at
LIMIT ${LIMIT}+$3)
UNION ALL UNION ALL
(SELECT ${ITEM_SUBQUERY_FIELDS}, max(subquery.voted_at) as "sortTime", (SELECT ${ITEM_SUBQUERY_FIELDS}, max(subquery.voted_at) as "sortTime",
sum(subquery.sats) as "earnedSats", false as mention sum(subquery.sats) as "earnedSats", false as mention
@ -62,7 +67,9 @@ export default {
AND "ItemAct".created_at <= $2 AND "ItemAct".created_at <= $2
AND "ItemAct".act <> 'BOOST' AND "ItemAct".act <> 'BOOST'
AND "Item"."userId" = $1) subquery AND "Item"."userId" = $1) subquery
GROUP BY ${ITEM_SUBQUERY_FIELDS}, subquery.island ORDER BY max(subquery.voted_at) desc) GROUP BY ${ITEM_SUBQUERY_FIELDS}, subquery.island
ORDER BY max(subquery.voted_at) desc
LIMIT ${LIMIT}+$3)
UNION ALL UNION ALL
(SELECT ${ITEM_FIELDS}, "Mention".created_at as "sortTime", NULL as "earnedSats", (SELECT ${ITEM_FIELDS}, "Mention".created_at as "sortTime", NULL as "earnedSats",
true as mention true as mention
@ -72,10 +79,12 @@ export default {
WHERE "Mention"."userId" = $1 WHERE "Mention"."userId" = $1
AND "Mention".created_at <= $2 AND "Mention".created_at <= $2
AND "Item"."userId" <> $1 AND "Item"."userId" <> $1
AND (p."userId" IS NULL OR p."userId" <> $1)) AND (p."userId" IS NULL OR p."userId" <> $1)
ORDER BY "sortTime" DESC ORDER BY "Mention".created_at
OFFSET $3 LIMIT ${LIMIT}+$3)
LIMIT ${LIMIT}`, me.id, decodedCursor.time, decodedCursor.offset) ORDER BY "sortTime" DESC
OFFSET $3
LIMIT ${LIMIT}`, me.id, decodedCursor.time, decodedCursor.offset)
notifications = notifications.map(n => { notifications = notifications.map(n => {
n.item = { ...n } n.item = { ...n }

5
components/header.js
View File

@ -112,7 +112,10 @@ export default function Header () {
<> <>
<Container className='px-sm-0'> <Container className='px-sm-0'>
<Navbar className={styles.navbar}> <Navbar className={styles.navbar}>
<Nav className='w-100 justify-content-between flex-wrap align-items-center' activeKey={path}> <Nav
className={styles.navbarNav}
activeKey={path}
>
<RefreshableLink href='/' passHref> <RefreshableLink href='/' passHref>
<Navbar.Brand className={`${styles.brand} d-none d-sm-block`}>STACKER NEWS</Navbar.Brand> <Navbar.Brand className={`${styles.brand} d-none d-sm-block`}>STACKER NEWS</Navbar.Brand>
</RefreshableLink> </RefreshableLink>

7
components/header.module.css
View File

@ -15,4 +15,11 @@
.navbar { .navbar {
padding: .5rem 0; padding: .5rem 0;
background-color: transparent !important; background-color: transparent !important;
}
.navbarNav {
width: 100%;
flex-wrap: wrap;
justify-content: space-between;
align-items: center;
} }