snowflake32

Documentation

Index

• type Snowflake
  • func NewSnowflake(d int32, w int32) *Snowflake
  • func (s *Snowflake) NextVal() int32
  • func (s *Snowflake) String() string

Types

type Snowflake

type Snowflake struct {
	sync.Mutex // 锁
	// contains filtered or unexported fields
}

Snowflake 24小时内不会重复的雪花序号生成器 构成为: 0 | seconds 17 bit | datacenter 2 bit | worker 3 bit| sequence 9 bit 最大支持32个节点，单节点TPS不超过512，超过则会阻塞程序到下一秒再返回序号，仅能用于特殊场景 seconds占用17bits是因为一天86400秒占用17bits

func NewSnowflake

func NewSnowflake(d int32, w int32) *Snowflake

NewSnowflake d for datacenter-id, w for worker-id

func (*Snowflake) NextVal

func (s *Snowflake) NextVal() int32

func (*Snowflake) String

func (s *Snowflake) String() string