Hein
40 lines
1.0 KiB
Go
40 lines
1.0 KiB
Go
package redis
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import (
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"time"
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"github.com/redis/go-redis/v9/internal"
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)
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// DialRetryBackoffConstant returns a dial retry backoff function that always returns d.
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// attempt is 0-based: attempt=0 is the delay after the 1st failed dial.
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func DialRetryBackoffConstant(d time.Duration) func(attempt int) time.Duration {
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if d < 0 {
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d = 0
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}
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return func(int) time.Duration { return d }
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}
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// DialRetryBackoffExponential returns a dial retry backoff function that uses exponential
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// backoff with jitter and a cap, using internal.RetryBackoff.
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//
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// attempt is 0-based: attempt=0 is the delay after the 1st failed dial.
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func DialRetryBackoffExponential(minBackoff, maxBackoff time.Duration) func(attempt int) time.Duration {
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if minBackoff < 0 {
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minBackoff = 0
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}
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if maxBackoff < 0 {
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maxBackoff = 0
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}
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if minBackoff > maxBackoff {
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minBackoff = maxBackoff
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}
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return func(attempt int) time.Duration {
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// internal.RetryBackoff expects retry >= 0.
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if attempt < 0 {
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attempt = 0
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}
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return internal.RetryBackoff(attempt, minBackoff, maxBackoff)
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}
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}
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