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25 lines
513 B
25 lines
513 B
6 years ago
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package internal
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import (
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"math/rand"
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"time"
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)
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// Retry backoff with jitter sleep to prevent overloaded conditions during intervals
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// https://www.awsarchitectureblog.com/2015/03/backoff.html
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func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration {
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if retry < 0 {
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retry = 0
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}
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backoff := minBackoff << uint(retry)
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if backoff > maxBackoff || backoff < minBackoff {
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backoff = maxBackoff
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}
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if backoff == 0 {
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return 0
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}
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return time.Duration(rand.Int63n(int64(backoff)))
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}
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