NanoID - Alternative To UUID

Hey coders

If you are a JavaScript developer, I am pretty much sure that you have used the npm package UUID at least once in your development journey.

For those who don't know what is UUID. It is an npm package to generate a unique string ID. Similar packages are available in other languages too.

But in this article I am not going to discuss UUID, rather I will discuss another awesome npm package to generate a unique ID known as NanoID.

What is NanoID?

A tiny, secure, URL-friendly, unique string ID generator for JavaScript.

Why NanoID?

• It is smaller in size as it has no dependencies.
• It is 60% faster than UUID.
• It uses cryptographically strong random APIs.
• It uses a larger alphabet than UUID (A-Za-z0-9_-).

We can control the behaviour of alphabets to be used.

NanoID is available in almost all the most used programming languages.

Disclaimer: All the above claims are picked from the package's docs itself.

Implementation

It is very easy to implement. Will write the code in a Node.js environment using CommonJS import.

Basic Way

It will generate the ID synchronously.

// Importingconst { nanoid } = require("nanoid");// It will generate and return an ID with 21 charactersconst id = nanoid();

Async way

It will generate the ID asynchronously.

// Importing async APIconst { nanoid } = require("nanoid/async");// It will generate and return an ID with 21 charactersconst id = await nanoid();

Custom Size

You can also pass the required ID's size as an argument.

// Importingconst { nanoid } = require("nanoid");// It will generate and return an ID with 10 charactersconst id = nanoid(10);

Reducing the size will increase the collisions probability.

Non-Secure

If you want performance and not concerned with security, then you can use the non-secure way.

// Importing non-secure APIconst { nanoid } = require("nanoid/non-secure");const id = nanoid();

Custom Character or Size

You can control what characters you want to be included in your ID.

// Importing customAlphabet APIconst { customAlphabet } = require("nanoid");// First Param: Characters// Second Param: ID sizeconst nanoid = customAlphabet("123456789qwerty", 8);// Generated ID would be like: "q15y6e9r"const id = nanoid();

You can also use the customAlphabet with async way and non-secure way.

// Importing async APIconst { customAlphabet} = require("nanoid/async");// Importing non-secure APIconst { customAlphabet} = require("nanoid/non-secure");

You can also check for the ID collision probability here.

Originally published at blog.bibekkakati.me

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