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https://github.com/christianselig/apollo-backend
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optimize queries
This commit is contained in:
parent
65f8402d88
commit
fc94bef379
1 changed files with 26 additions and 28 deletions
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@ -230,16 +230,16 @@ func enqueueUsers(ctx context.Context, logger *logrus.Logger, statsd *statsd.Cli
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err := pool.BeginFunc(ctx, func(tx pgx.Tx) error {
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stmt := `
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WITH batch AS (
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SELECT id
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UPDATE users
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SET next_check_at = $2
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WHERE id IN (
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SELECT id
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FROM users
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WHERE next_check_at < $1
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ORDER BY next_check_at
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FOR UPDATE SKIP LOCKED
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LIMIT 100
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)
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UPDATE users
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SET next_check_at = $2
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WHERE users.id IN(SELECT id FROM batch)
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RETURNING users.id`
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rows, err := tx.Query(ctx, stmt, now, next)
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if err != nil {
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@ -296,16 +296,16 @@ func enqueueSubreddits(ctx context.Context, logger *logrus.Logger, statsd *stats
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err := pool.BeginFunc(ctx, func(tx pgx.Tx) error {
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stmt := `
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WITH batch AS (
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SELECT id
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UPDATE subreddits
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SET next_check_at = $2
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WHERE subreddits.id IN(
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SELECT id
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FROM subreddits
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WHERE next_check_at < $1
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ORDER BY next_check_at
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FOR UPDATE SKIP LOCKED
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LIMIT 100
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)
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UPDATE subreddits
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SET next_check_at = $2
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WHERE subreddits.id IN(SELECT id FROM batch)
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RETURNING subreddits.id`
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rows, err := tx.Query(ctx, stmt, now, next)
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if err != nil {
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@ -366,17 +366,16 @@ func enqueueStuckAccounts(ctx context.Context, logger *logrus.Logger, statsd *st
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err := pool.BeginFunc(ctx, func(tx pgx.Tx) error {
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stmt := `
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WITH batch AS (
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SELECT id
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FROM accounts
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WHERE
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next_stuck_notification_check_at < $1
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ORDER BY next_stuck_notification_check_at
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LIMIT 500
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)
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UPDATE accounts
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SET next_stuck_notification_check_at = $2
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WHERE accounts.id IN(SELECT id FROM batch)
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WHERE accounts.id IN(
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SELECT id
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FROM accounts
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WHERE next_stuck_notification_check_at < $1
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ORDER BY next_stuck_notification_check_at
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FOR UPDATE SKIP LOCKED
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LIMIT 500
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)
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RETURNING accounts.id`
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rows, err := tx.Query(ctx, stmt, now, next)
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if err != nil {
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@ -437,17 +436,16 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
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err := pool.BeginFunc(ctx, func(tx pgx.Tx) error {
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stmt := `
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WITH account AS (
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SELECT id
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FROM accounts
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WHERE
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next_notification_check_at < $1
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ORDER BY next_notification_check_at
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LIMIT 2500
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)
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UPDATE accounts
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SET next_notification_check_at = $2
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WHERE accounts.id IN(SELECT id FROM account)
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WHERE accounts.id IN(
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SELECT id
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FROM accounts
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WHERE next_notification_check_at < $1
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ORDER BY next_notification_check_at
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FOR UPDATE SKIP LOCKED
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LIMIT 2500
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)
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RETURNING accounts.id`
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rows, err := tx.Query(ctx, stmt, now, next)
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if err != nil {
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