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https://github.com/christianselig/apollo-backend
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measure dequeue latency
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parent
80bae7ff9f
commit
94d3941005
1 changed files with 6 additions and 2 deletions
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@ -93,7 +93,7 @@ func (nw *notificationsWorker) Start() error {
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nw.logger.Info("starting up notifications worker", zap.Int("consumers", nw.consumers))
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nw.logger.Info("starting up notifications worker", zap.Int("consumers", nw.consumers))
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prefetchLimit := int64(nw.consumers * 2)
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prefetchLimit := int64(nw.consumers * 4)
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if err := queue.StartConsuming(prefetchLimit, pollDuration); err != nil {
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if err := queue.StartConsuming(prefetchLimit, pollDuration); err != nil {
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return err
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return err
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@ -136,9 +136,13 @@ func NewNotificationsConsumer(nw *notificationsWorker, tag int) *notificationsCo
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func (nc *notificationsConsumer) Consume(delivery rmq.Delivery) {
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func (nc *notificationsConsumer) Consume(delivery rmq.Delivery) {
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id := delivery.Payload()
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id := delivery.Payload()
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key := fmt.Sprintf("locks:accounts:%s", id)
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// Measure queue latency
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ttl := nc.redis.TTL(nc, key).Val().Milliseconds()
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_ = nc.statsd.Histogram("apollo.dequeue.time", float64(ttl), []string{"queue:notifications"}, 1.0)
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defer func() {
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defer func() {
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key := fmt.Sprintf("locks:accounts:%s", id)
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if err := nc.redis.Del(nc, key).Err(); err != nil {
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if err := nc.redis.Del(nc, key).Err(); err != nil {
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nc.logger.Error("failed to remove account lock", zap.Error(err), zap.String("key", key))
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nc.logger.Error("failed to remove account lock", zap.Error(err), zap.String("key", key))
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}
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}
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