snowflake

Documentation

Index

• Constants
• type ISnowFlake
  • func CreateSnowflakeFactory() ISnowFlake
  • func SnowflakeIdGenerator() ISnowFlake

Constants

const (
	//SnowFlake 雪花算法
	StartTimeStamp = int64(1483228800000) //开始时间截 (2017-01-01)
	MachineIdBits  = uint(10)             //机器id所占的位数
	SequenceBits   = uint(12)             //序列所占的位数
	//MachineIdMax   = int64(-1 ^ (-1 << MachineIdBits)) //支持的最大机器id数量
	SequenceMask   = int64(-1 ^ (-1 << SequenceBits)) //
	MachineIdShift = SequenceBits                     //机器id左移位数
	TimestampShift = SequenceBits + MachineIdBits     //时间戳左移位数
)

Types

type ISnowFlake

type ISnowFlake interface {
	GetId() int64
	GetIdAsString() string
}

func CreateSnowflakeFactory

func CreateSnowflakeFactory() ISnowFlake

创建一个雪花算法生成器(生成工厂)

func SnowflakeIdGenerator

func SnowflakeIdGenerator() ISnowFlake