NanoID is a lightweight Go package for generating short, unique IDs. It's a great alternative to longer, more complex UUIDs, especially when you need something more user-friendly.
go get github.com/9ssi7/nanoidimport "github.com/9ssi7/nanoid"
id, err := nanoid.New()id, err := nanoid.NewWithLength(nanoid.LengthMedium)
if err != nil {
log.Fatal(err)
}if !nanoid.Validate(id) {
log.Fatal("Invalid ID")
}NanoID is highly performant and compares favorably with Google's UUID package.
goos: linux
goarch: amd64
pkg: github.com/9ssi7/nanoid
cpu: 12th Gen Intel(R) Core(TM) i7-12700H
BenchmarkNanoID
BenchmarkNanoID-20 1240796 933.8 ns/op
BenchmarkGoogleUUID
BenchmarkGoogleUUID-20 1312452 903.1 ns/opAs seen in the benchmark results, NanoID's performance is very close to Google UUID, making it a suitable choice for most use cases where short IDs are preferred.
NanoID uses crypto/rand for generating secure random IDs, reducing the likelihood of collision. However, it's crucial to consider the trade-off between ID length and collision probability. Shorter IDs are more user-friendly but have a higher chance of collision, especially in systems with a high number of generated IDs.