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https://github.com/christianselig/apollo-backend
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be more aggressive with scheduling
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parent
961e41094d
commit
60e18c37f7
1 changed files with 14 additions and 15 deletions
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@ -21,7 +21,9 @@ import (
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)
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const (
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batchSize = 100
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batchSize = 100
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checkTimeout = 60 // how long until we force a check
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enqueueTimeout = 5 // how long until we try to re-enqueue
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)
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func main() {
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@ -128,9 +130,8 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
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// and at most 6 seconds ago. Also look for accounts that haven't been checked
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// in over a minute.
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ts := start.Unix()
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left := ts - 6
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right := left + 1
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expired := ts - 60
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ready := ts - enqueueTimeout
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expired := ts - checkTimeout
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ids := []int64{}
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@ -140,15 +141,15 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
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SELECT id
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FROM accounts
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WHERE
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last_checked_at BETWEEN $1 AND $2
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OR last_checked_at < $3
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last_enqueued_at < $1
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OR last_checked_at < $2
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ORDER BY last_checked_at
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)
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UPDATE accounts
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SET last_enqueued_at = $4
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SET last_enqueued_at = $3
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WHERE accounts.id IN(SELECT id FROM account)
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RETURNING accounts.id`
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rows, err := tx.Query(ctx, stmt, left, right, expired, now)
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rows, err := tx.Query(ctx, stmt, ready, expired, now)
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if err != nil {
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return err
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}
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@ -170,8 +171,7 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
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logger.WithFields(logrus.Fields{
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"count": len(ids),
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"start": left,
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"end": right,
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"start": ready,
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}).Debug("enqueueing account batch")
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enqueued := 0
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@ -190,20 +190,20 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
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"len": len(batch),
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}).Debug("enqueueing batch")
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lua := `
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lua := fmt.Sprintf(`
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local retv={}
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local ids=cjson.decode(ARGV[1])
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for i=1, #ids do
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local key = "locks:accounts:" .. ids[i]
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if redis.call("exists", key) == 0 then
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redis.call("setex", key, 60, 1)
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redis.call("setex", key, %d, 1)
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retv[#retv + 1] = ids[i]
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end
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end
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return retv
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`
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`, checkTimeout)
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res, err := redisConn.Eval(ctx, lua, []string{}, batch).Result()
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if err != nil {
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@ -239,8 +239,7 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
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"count": enqueued,
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"skipped": skipped,
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"failed": failed,
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"start": left,
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"end": right,
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"start": ready,
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}).Info("done enqueueing account batch")
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}
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