idgenerator

Documentation

Index

• Constants
• type IdGenerator
  • func NewSnowflake(nodeId, datacenterId int64) (IdGenerator, error)

Constants

const (
	AnchorEpoch = int64(1451569374000) // 2015/12/31 21:42:54

	DataCenterBits  = uint(2)
	MaxDataCenterId = -1 ^ (-1 << DataCenterBits)

	NodeIdBits = uint(7)
	MaxNodeId  = -1 ^ (-1 << NodeIdBits)

	SequenceBits      = uint(15)
	NodeIdShift       = SequenceBits
	DataCenterIdShift = SequenceBits + NodeIdBits
	TimestampShift    = SequenceBits + NodeIdBits + DataCenterBits
	MaxSequence       = -1 ^ (-1 << SequenceBits)

	MaxBatchIds = 100000
)

Types

type IdGenerator

type IdGenerator interface {
	NextId() (int64, error)
	NextIds(num int) ([]int64, error)
}

func NewSnowflake

func NewSnowflake(nodeId, datacenterId int64) (IdGenerator, error)