snowid

A concurrent-safe lock-free implementation of snowflake algorithm in Golang

Install

go get -u github.com/yankeguo/snowid

Usage

// create an unique identifier
id, _ := strconv.ParseUint(os.Getenv("WORKER_ID"), 10, 64)

// create an instance (a sonyflake like instance)
s := snowid.New(snowflake.Options{
    Epoch: time.Date(2020, time.January, 1, 0, 0, 0, 0, time.UTC),
    ID: id,
    Grain: time.Millisecond*10,
    LeadingBit: true,
})

// get a id
s.NewID()

// stop and release all related resource
s.Stop()

Performance

Less than 1us/op on Apple MacBook Air (M1)

goos: darwin
goarch: arm64
pkg: github.com/yankeguo/snowid
BenchmarkGenerator_NewID-8       2465515               469.5 ns/op
PASS
ok      github.com/yankeguo/snowid       1.742s

Credits

GUO YANKE, MIT License