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Re-use timer instead of creating new ones on every sample
The docs for `time.After()` note that "The underlying Timer is not recovered by the garbage collector until the timer fires".
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@ -430,6 +430,8 @@ func (s *shards) runShard(i int) {
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// anyways.
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pendingSamples := model.Samples{}
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timer := time.NewTimer(s.qm.cfg.BatchSendDeadline)
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for {
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select {
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case sample, ok := <-queue:
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@ -449,7 +451,11 @@ func (s *shards) runShard(i int) {
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s.sendSamples(pendingSamples[:s.qm.cfg.MaxSamplesPerSend])
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pendingSamples = pendingSamples[s.qm.cfg.MaxSamplesPerSend:]
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}
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case <-time.After(s.qm.cfg.BatchSendDeadline):
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if !timer.Stop() {
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<-timer.C
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}
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timer.Reset(s.qm.cfg.BatchSendDeadline)
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case <-timer.C:
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if len(pendingSamples) > 0 {
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s.sendSamples(pendingSamples)
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pendingSamples = pendingSamples[:0]
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