mirror of https://github.com/go-redis/redis.git
30 lines
452 B
Go
30 lines
452 B
Go
|
package internal
|
||
|
|
|
||
|
|
import (
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"github.com/redis/go-redis/v9/internal/rand"
|
||
|
|
)
|
||
|
|
|
||
|
|
func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration {
|
||
|
|
if retry < 0 {
|
||
|
|
panic("not reached")
|
||
|
|
}
|
||
|
|
if minBackoff == 0 {
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
|
||
|
|
d := minBackoff << uint(retry)
|
||
|
|
if d < minBackoff {
|
||
|
|
return maxBackoff
|
||
|
|
}
|
||
|
|
|
||
|
|
d = minBackoff + time.Duration(rand.Int63n(int64(d)))
|
||
|
|
|
||
|
|
if d > maxBackoff || d < minBackoff {
|
||
|
|
d = maxBackoff
|
||
|
|
}
|
||
|
|
|
||
|
|
return d
|
||
|
|
}
|