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Diffstat (limited to 'vendor/github.com/go-redis/redis/internal/internal.go')
-rw-r--r-- | vendor/github.com/go-redis/redis/internal/internal.go | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/vendor/github.com/go-redis/redis/internal/internal.go b/vendor/github.com/go-redis/redis/internal/internal.go new file mode 100644 index 000000000..fb4efa5f0 --- /dev/null +++ b/vendor/github.com/go-redis/redis/internal/internal.go @@ -0,0 +1,23 @@ +package internal + +import ( + "math/rand" + "time" +) + +const retryBackoff = 8 * time.Millisecond + +// Retry backoff with jitter sleep to prevent overloaded conditions during intervals +// https://www.awsarchitectureblog.com/2015/03/backoff.html +func RetryBackoff(retry int, maxRetryBackoff time.Duration) time.Duration { + if retry < 0 { + retry = 0 + } + + backoff := retryBackoff << uint(retry) + if backoff > maxRetryBackoff { + backoff = maxRetryBackoff + } + + return time.Duration(rand.Int63n(int64(backoff))) +} |