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author | Toshiaki Takahashi <takahashi.tsc@ncos.nec.co.jp> | 2018-09-06 09:04:29 +0000 |
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committer | Toshiaki Takahashi <takahashi.tsc@ncos.nec.co.jp> | 2018-09-07 06:03:01 +0000 |
commit | d61931341176dad9ccff7c967a10d88fe54218fa (patch) | |
tree | 526457882d4abe0c38d2242d6daa311bf8ef51cf /src/dma/vendor/github.com/go-redis/redis/internal/internal.go | |
parent | 73abc060f31a6bf866fa1dad0a1a6efdfd94d775 (diff) |
src: Add DMA localagent
Change-Id: Ibcee814fbc9a904448eeb368a1a26bbb69cf54aa
Signed-off-by: Toshiaki Takahashi <takahashi.tsc@ncos.nec.co.jp>
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))) +} |