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be more aggressive with scheduling

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This commit is contained in:
Andre Medeiros 2021-07-09 00:27:50 -04:00
parent 961e41094d
commit 60e18c37f7
1 changed files with 14 additions and 15 deletions
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27
cmd/apollo-scheduler/main.go
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@ -22,6 +22,8 @@ import (
const (
batchSize = 100
checkTimeout = 60 // how long until we force a check
enqueueTimeout = 5 // how long until we try to re-enqueue
)
func main() {
@ -128,9 +130,8 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
// and at most 6 seconds ago. Also look for accounts that haven't been checked
// in over a minute.
ts := start.Unix()
left := ts - 6
right := left + 1
expired := ts - 60
ready := ts - enqueueTimeout
expired := ts - checkTimeout
ids := []int64{}
@ -140,15 +141,15 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
SELECT id
FROM accounts
WHERE
last_checked_at BETWEEN $1 AND $2
OR last_checked_at < $3
last_enqueued_at < $1
OR last_checked_at < $2
ORDER BY last_checked_at
)
UPDATE accounts
SET last_enqueued_at = $4
SET last_enqueued_at = $3
WHERE accounts.id IN(SELECT id FROM account)
RETURNING accounts.id`
rows, err := tx.Query(ctx, stmt, left, right, expired, now)
rows, err := tx.Query(ctx, stmt, ready, expired, now)
if err != nil {
return err
}
@ -170,8 +171,7 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
logger.WithFields(logrus.Fields{
"count": len(ids),
"start": left,
"end": right,
"start": ready,
}).Debug("enqueueing account batch")
enqueued := 0
@ -190,20 +190,20 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
"len": len(batch),
}).Debug("enqueueing batch")
lua := `
lua := fmt.Sprintf(`
local retv={}
local ids=cjson.decode(ARGV[1])
for i=1, #ids do
local key = "locks:accounts:" .. ids[i]
if redis.call("exists", key) == 0 then
redis.call("setex", key, 60, 1)
redis.call("setex", key, %d, 1)
retv[#retv + 1] = ids[i]
end
end
return retv
`
`, checkTimeout)
res, err := redisConn.Eval(ctx, lua, []string{}, batch).Result()
if err != nil {
@ -239,8 +239,7 @@ func enqueueAccounts(ctx context.Context, logger *logrus.Logger, statsd *statsd.
"count": enqueued,
"skipped": skipped,
"failed": failed,
"start": left,
"end": right,
"start": ready,
}).Info("done enqueueing account batch")
}