Working With UUID In Node

Working with UUID in Node – onlinecode

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As of Node v14.17, Node’s built-in crypto module has a randomUUID() function that you can use to generate a new v4 UUID.
crypto.randomUUID() returns the UUID as a string.

const crypto = require('crypto');

crypto.randomUUID(); // '8fb2a405-503e-4344-8543-6e8d93f4c9ee'
typeof crypto.randomUUID(); // 'string'

Other UUID Versions for Working with UUID in Node

Node.js’ built-in UUID functionality only supports UUID v4.
For other UUID versions, or older versions of Node that don’t support UUIDs, you should use the uuid npm module.

const uuid = require('uuid');

// '2ebcdfa0-cd6e-11ed-9477-575477630084'
uuid.v1();

// '546b33ef-f0d6-5810-8089-573a2a506dd5'
uuid.v5('test', '2ebcdfa0-cd6e-11ed-9477-575477630084');

UUID Alternatives for Working with UUID in Node

UUIDs are just one alternative for quickly generating probably unique ids.
Other alternatives include MongoDB ObjectIds and nanoid.
MongoDB ObjectIds are shorter and generally work better with MongoDB, and nanoids are even shorter.

const mongoose = require('mongoose');

new mongoose.Types.ObjectId(); // '6422ef942841d91d8c6ca631'

const nanoid = require('nanoid');

With Working with UUID in NodeMongoose for

Mongoose has basic support for UUIDs, including UUID as a schema type.
The key detail to note is that, while Mongoose converts UUIDs to strings in Node.js, Mongoose stores UUIDs using MongoDB’s native UUID type.

const authorSchema = new Schema({
  _id: Schema.Types.UUID, // Can also do '_id: 'UUID''
  name: String
});

const Author = mongoose.model('Author', authorSchema);

const author = new Author({ name: 'J.R.R. Tolkien' });
console.log(typeof author._id); // 'string'

await author.save();

const doc = await Author.collection.findOne({ _id: author._id });
doc._id; // 'new UUID("09190f70-3d30-11e5-8814-0f4df9a59c41")'
doc._id.constructor.name; // 'UUID'

Node.js is an open-source, cross-platform JavaScript runtime environment. Node.js allows you to run JavaScript code outside of a web browser. This makes it possible to create a wide variety of applications, including web servers, real-time chat applications, and data processing pipelines.

Node.js is built on top of the V8 JavaScript engine, which is also used by Google Chrome. This means that Node.js applications can take advantage of the same performance and features as Chrome.

Node.js is a popular choice for building web servers. This is because Node.js is very efficient at handling concurrent requests. Node.js uses a non-blocking event loop to handle requests, which means that it can handle multiple requests at the same time without slowing down.

Node.js is also a good choice for building real-time chat applications. This is because Node.js is able to push data to clients in real time without the need for polling. This makes it possible to create a smooth and responsive user experience.

Node.js is a powerful tool that can be used to create a wide variety of applications. If you are looking for a JavaScript runtime environment that is fast, scalable, and efficient, then Node.js is a great choice.

Here are some of the benefits of using Node.js:

Performance: Node.js is very efficient at handling concurrent requests. This makes it a good choice for building web servers and real-time chat applications.
Scalability: Node.js is designed to scale horizontally. This means that you can add more nodes to your cluster to handle more traffic.
Efficiency: Node.js uses a non-blocking event loop to handle requests. This makes it possible to handle multiple requests at the same time without slowing down.
Community: Node.js has a large and active community. This means that there are many resources available to help you learn and use Node.js.

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