diff options
Diffstat (limited to 'src/dma/vendor/github.com/go-redis/redis/internal/internal.go')
-rw-r--r-- | src/dma/vendor/github.com/go-redis/redis/internal/internal.go | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/dma/vendor/github.com/go-redis/redis/internal/internal.go b/src/dma/vendor/github.com/go-redis/redis/internal/internal.go new file mode 100644 index 00000000..ad3fc3c9 --- /dev/null +++ b/src/dma/vendor/github.com/go-redis/redis/internal/internal.go @@ -0,0 +1,24 @@ +package internal + +import ( + "math/rand" + "time" +) + +// Retry backoff with jitter sleep to prevent overloaded conditions during intervals +// https://www.awsarchitectureblog.com/2015/03/backoff.html +func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration { + if retry < 0 { + retry = 0 + } + + backoff := minBackoff << uint(retry) + if backoff > maxBackoff || backoff < minBackoff { + backoff = maxBackoff + } + + if backoff == 0 { + return 0 + } + return time.Duration(rand.Int63n(int64(backoff))) +} |