A unique ID generator that's a hundredfold faster than a UUID

This is a creation in Article, where the information may have evolved or changed.

Objective

In game development, we often have to set a globally unique ID for a request, an object, or something else. The common choices are random numbers, timestamps, UUID, and Redis generation IDs, which can either be duplicated or too slow, so I developed wuid, a very fast unique ID generator.

The wuid is 100 times times faster than the UUID, 4,600 times times faster than the Redis generation ID.

Core Design

The wuid sequence generates a 64-bit integer whose high 24 bits are loaded from the external storage and automatically plus 1 per load.

Currently supported external storage includes: Redis, MySQL, MongoDB.

Benchmarks

Benchmarkwuid 200000000 9.38 ns/op 0 b/op 0 allocs/opbenchmarkwuid-4 20000000  0 9.19 ns/op 0 b/op 0 allocs/opbenchmarkrand 100000000 21.6 ns/op 0 B/op 0 allocs/opbenchmarkrand-4 100000000 21.9 ns/op 0 b/op 0 Allocs/opbenchm          Arktimestamp 2000000 669 ns/op 0 b/op 0 allocs/opbenchmarktimestamp-4 2000000          664 ns/op 0 b/op 0 allocs/opbenchmarkuuid_v1 2000000 888 ns/op 0 B/OP 0 allocs/opbenchmarkuuid_v1-4 2000000 871 ns/op 0 b/op 0 Allocs/opbenchmarkuui D_V2 2000000 904 ns/op 0 b/op 0 allocs/opbenchmarkuuid_v2-4 2000000 8          Ns/op 0 b/op 0 allocs/opbenchmarkuuid_v4 1000000 1325 ns/op 1 Allocs/opbenchmarkuUid_v4-4 1000000 1287 ns/op b/op 1 Allocs/opbenchmarkredis 30000 4          3970 ns/op 176 b/op 5 allocs/opbenchmarkredis-4 30000 42279 ns/op 176 b/op 5 allocs/op

Characteristics

• Extremely fast speed
• Thread Safety
• Guaranteed to be unique within the same room
• Guaranteed across time only
• Low 40 bits are about to be exhausted when the new high 24 bit is automatically acquired

Using the example

import "github.com/edwingeng/wuid/redis"// Setupg := wuid.NewWUID("default", nil)g.LoadH24FromRedis("127.0.0.1:6379", "", "wuid")// Generatefor i := 0; i < 10; i++ {    fmt.Println(g.Next())}

Transmission Door

Https://github.com/edwingeng/wuid