How can I deploy SvelteKit IO app with two ports?

Are you tired of struggling with deploying your SvelteKit IO app on two different ports? Well, you’re in luck! In this comprehensive guide, we’ll take you through the step-by-step process of deploying your SvelteKit IO app with two ports. Buckle up, folks, and let’s dive in!

What is SvelteKit?

Before we dive into the deployment process, let’s quickly cover what SvelteKit is. SvelteKit is a framework built on top of Svelte, a lightweight JavaScript compiler. It provides a set of tools and APIs to help you build fast, scalable, and robust web applications. SvelteKit is perfect for building complex web applications, and with its built-in support for server-side rendering (SSR), it’s a popular choice among developers.

Why do I need to deploy my SvelteKit app on two ports?

There are several reasons why you might want to deploy your SvelteKit app on two ports. Here are a few scenarios:

• Load Balancing: By deploying your app on two ports, you can distribute incoming traffic across multiple instances, ensuring better load balancing and improved performance.
• Separate Environments: You might want to deploy your app on two ports to separate development and production environments, allowing you to test and deploy changes without affecting your live application.
• API and Web Interface: In some cases, you might want to deploy your API on one port and your web interface on another port, providing a clear separation of concerns and improved security.

Preparation is Key

Before we start the deployment process, make sure you have the following tools installed:

• Npm or Yarn (package managers)
• Vercel CLI (optional)
• A code editor or IDE of your choice

Step 1: Create a New SvelteKit Project

If you haven’t already, create a new SvelteKit project using the following command:

npx degit sveltejs-kit/template my-app

This will create a new SvelteKit project in a directory called `my-app`.

Step 2: Configure Your SvelteKit App

In your `svelte.config.js` file, add the following configuration:

import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
import adapter from '@sveltejs/adapter-node';

export default {
  preprocess: vitePreprocess(),
  kit: {
    adapter: adapter({
      // Set the port for your app
      port: 3000,
    }),
  },
};

This configuration tells SvelteKit to use the `adapter-node` adapter and sets the port to 3000. We’ll change this later to use two ports.

Step 3: Create a Script to Start Your App on Two Ports

In your `package.json` file, add the following script:

"scripts": {
  "dev": "node scripts/start.js",
  "dev:port1": "node scripts/start.js --port=3000",
  "dev:port2": "node scripts/start.js --port=4000"
}

This script will allow us to start our app on two different ports using the `dev:port1` and `dev:port2` scripts.

Step 4: Create a Script to Start Your App

Create a new file called `start.js` in the `scripts` directory with the following code:

const { stdin, stdout } = process;
const { PORT } = process.argv[2];

require('dotenv').config();
const { adapter } = require('@sveltejs/adapter-node');
const app = require('./main');

adapter.createServer({
  port: PORT,
  // Set the env variable to enable SSR
  env: { MODE: 'production' },
}).then(server => {
  stdout.write(`Server started on port ${PORT}\n`);
  stdin.resume();
});

This script takes the port number as an argument and starts the SvelteKit app on that port.

Step 5: Update Your SvelteKit Config

Update your `svelte.config.js` file to use the `start.js` script:

import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
import adapter from '@sveltejs/adapter-node';

export default {
  preprocess: vitePreprocess(),
  kit: {
    adapter: adapter({
      // Remove the port configuration
    }),
    // Add a script to start the app
    script: 'node scripts/start.js',
  },
};

Step 6: Start Your App on Two Ports

Use the following commands to start your app on two different ports:

yarn dev:port1
yarn dev:port2

This will start your app on ports 3000 and 4000.

Conclusion

And that’s it! You’ve successfully deployed your SvelteKit app on two different ports. This setup will allow you to take advantage of load balancing, separate environments, and improved security. Remember to update your production configuration and adjust the port numbers according to your needs.

Bonus: Deploying to Vercel

If you want to deploy your SvelteKit app to Vercel, you can use the following configuration:

module.exports = {
  // Enable SSR
  target: 'serverless',
  // Set the environment variable
  env: {
    MODE: 'production',
  },
  // Define the build and start scripts
  scripts: {
    build: 'svelte-kit build',
    start: 'svelte-kit start',
  },
  // Set the port configuration
  ports: {
    3000: 'port1',
    4000: 'port2',
  },
};

This configuration will deploy your SvelteKit app to Vercel and start it on two different ports.

Frequently Asked Questions

Q	A
Can I use this setup for production?	Yes, this setup is suitable for production environments. However, make sure to adjust the port numbers and configuration according to your needs.
What if I want to use a different adapter?	You can use any adapter supported by SvelteKit, such as `adapter-static` or `adapter-vercel`. Just update the `adapter` configuration in your `svelte.config.js` file.
Can I use this setup for other frameworks?	This setup is specific to SvelteKit, but you can adapt the concepts to other frameworks that support server-side rendering, such as Next.js or Nuxt.js.

I hope this comprehensive guide has helped you deploy your SvelteKit app with two ports. Happy coding!

Keyword Count: 21

Here is the FAQ about deploying a SvelteKit app with two ports:

Frequently Asked Question

Get ready to unleash your SvelteKit app to the world! But wait, how do you deploy it with two ports? Don’t worry, we’ve got you covered!