Go的UUID生成

go软件包列表

软件包	样例	格式
ksuid	0pPKHjWprnVxGH7dEsAoXX2YQvU	4 bytes of time (seconds) + 16 random bytes
xid	b50vl5e54p1000fo3gh0	4 bytes of time (seconds) + 3 byte machine id + 2 byte process id + 3 bytes random
betterguid	-N-35bz_wVbhxzTZD2wO	8 bytes of time (milliseconds) + 9 random bytes
sonyflake	402329004549341446	~6 bytes of time (10 ms) + 1 byte sequence + 2 bytes machine id
snowflake	1512052461246971904	1 Bit Unused + 41 Bit Timestamp + 10 Bit NodeID + 12 Bit Sequence ID
snowflake	1512052461246971904	1 Bit Unused + 41 Bit Timestamp + 10 Bit NodeID + 12 Bit Sequence ID
ulid	01BJMVNPBBZC3E36FJTGVF0C4S	6 bytes of time (milliseconds) + 8 bytes random
sid	1JADkqpWxPx-4qaWY47~FqI	8 bytes of time (ns) + 8 random bytes
shortuuid	dwRQAc68PhHQh4BUnrNsoS	UUIDv4 or v5, encoded in a more compact way
go.uuid	5b52d72c-82b3-4f8e-beb5-437a974842c	UUIDv4 from RFC 4112 for comparison
google.uuid	dd5f48eb-1722-4e5f-9d56-dcaf0aae1026	UUIDv4
bomberman.uuid	330806cf-684c-43f7-85aa-79939ed3415d	UUIDv4
MongoDB ObjectID	624ee0fb37583f00042dc309	4-byte timestamp + 5-byte random value + 3-byte incrementing counter

代码

package main

import (
    "fmt"
    "log"
    "math/rand"
    "time"

    "github.com/bwmarrin/snowflake"
    "github.com/chilts/sid"
    goSnowflake "github.com/godruoyi/go-snowflake"
    guuid "github.com/google/uuid"
    "github.com/kjk/betterguid"
    "github.com/lithammer/shortuuid"
    "github.com/oklog/ulid"
    pborman "github.com/pborman/uuid"
    "github.com/rs/xid"
    goUUID "github.com/satori/go.uuid"
    "github.com/segmentio/ksuid"
    "github.com/sony/sonyflake"
    "go.mongodb.org/mongo-driver/bson/primitive"
)

func genShortUUID() {
    id := shortuuid.New()
    fmt.Printf("github.com/lithammer/shortuuid: %s\n", id)
}

func genXid() {
    id := xid.New()
    fmt.Printf("github.com/rs/xid:              %s\n", id.String())
}

func genKsuid() {
    id := ksuid.New()
    fmt.Printf("github.com/segmentio/ksuid: %s\n", id.String())
}

func genBetterGUID() {
    id := betterguid.New()
    fmt.Printf("github.com/kjk/betterguid: %s\n", id)
}

func genUlid() {
    t := time.Now().UTC()
    entropy := rand.New(rand.NewSource(t.UnixNano()))
    id := ulid.MustNew(ulid.Timestamp(t), entropy)
    fmt.Printf("github.com/oklog/ulid: %s\n", id.String())
}

func genSonyflake() {
    flake := sonyflake.NewSonyflake(sonyflake.Settings{})
    id, err := flake.NextID()
    if err != nil {
        log.Fatalf("flake.NextID() failed with %s\n", err)
    }
    // Note: this is base16, could shorten by encoding as base62 string
    fmt.Printf("github.com/sony/sonyflake: %d\n", id)
}

func genSnowflake() {
    nodeId := rand.Int63() % 1023
    node, err := snowflake.NewNode(nodeId)
    if err != nil {
        log.Fatalf("snowflake.NewNode() failed with %s\n", err)
    }

    id := node.Generate().Int64()
    fmt.Printf("github.com/bwmarrin/snowflake: %d\n", id)
}

func genGoSnowflake() {
    id := goSnowflake.ID()
    fmt.Printf("github.com/godruoyi/go-snowflake: %d\n", id)
}

func genSid() {
    id := sid.Id()
    fmt.Printf("github.com/chilts/sid: %s\n", id)
}

func genUUIDv4() {
    id := goUUID.NewV4()
    fmt.Printf("github.com/satori/go.uuid: %s\n", id)
}

func genUUID() {
    id := guuid.New()
    fmt.Printf("github.com/google/uuid: %s\n", id.String())
}

func genPbormanUUID() {
    id := pborman.NewRandom()
    fmt.Printf("github.com/pborman/uuid: %s\n", id.String())
}

func genMongoDBObjectID() {
    id := primitive.NewObjectID()
    fmt.Printf("go.mongodb.org/mongo-driver/bson/primitive: %s\n", id.Hex())
}

func main() {
    genXid()
    genKsuid()
    genBetterGUID()
    genUlid()
    genSonyflake()
    genSnowflake()
    genGoSnowflake()
    genSid()
    genShortUUID()
    genUUIDv4()
    genUUID()
    genPbormanUUID()
    genMongoDBObjectID()
}