goSnowFlake
According to the Twitter SnowFlake Theory, A ThreadSafe Unique ID Generator written by Golang 根据 Twitter SnowFlake 算法, 实现的分布式线程安全 UID 生成器
Feature
- 线程安全的 UID 生成器
- 绿色可插拔,无需依赖 Redis,Mysql,无状态
- 适合分布式系统
- 实现 Twitter SnowFlake 理论
Description
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+----------------------+--------------------+--------------------+
|timestamp(ms) | worker node id | sequence |
+----------------------+--------------------+-------------------- +
id = timestamp | workerid | sequence (eg. 1451063443347648410)
An id is composed by three part: timestamp in millon second, worker id, and sequence. Sequence is zero default. when timestamp is the same, we use sequence to avoid conflict
Installation
go get github.com/zheng-ji/goSnowFlake
Example
import (
"fmt"
"github.com/zheng-ji/goSnowFlake"
)
func main() {
// Params: Given the workerId, 0 < workerId < 1024
iw, err := goSnowFlake.NewIdWorker(1)
if err!= nil {
fmt.Println(err)
}
for i := 0; i < 100; i++ {
if id, err := iw.NextId(); err != nill {
fmt.Println(id)
}
}
}
Documentation
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