🔥 Daily Digest: Prompt Engineering, JavaScript Performance, and CSS Tricks to Elevate Your Code

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Daily Issue #69 | Subscribe to DS | Daily Sandbox Pro

This issue tackles the debate on prompt engineering, JavaScript optimization, and CSS wizardry. Here’s the gist:

• Prompt Engineering Debate: Is it still relevant or already outdated?

• JavaScript Memory Optimization: Techniques for large-scale app performance.

• CSS Perspective Mastery: Tips to add depth and realism to your designs.

• Next.js SEO Guide: Boost your site’s visibility with effective SEO strategies.

• Coding Toolbox:

  • bolt: Power up JavaScript project management.

  • Fraction.js: Work with rational numbers effortlessly in JavaScript.

  • bun: The fastest bundler and package manager for JavaScript.

  • emoji-cheat-sheet: Handy markdown emoji guide for your projects

• Is Prompt Engineering Dead?

• JavaScript Memory Management and Optimization Techniques for Large-Scale Applications

• Mastering Perspective in CSS

• How to Implement SEO in Next.js

More news here →

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How to Set Up a Vue 3 Frontend, Node.js API, and High-Performance WebSocket Server in Docker

Web development can feel like juggling fire, but with the right tools, it’s all about creating an efficient, containerized environment. Today, we’re combining Vue 3 for the frontend, Node.js for the API, and uWebSockets.js for lightning-fast WebSockets—all wrapped neatly in Docker.

Step 1: Setting Up Vue 3

First, create your Vue 3 app. Navigate to your project folder and run npm init vue@latest. Choose your options, install dependencies, and you’re ready. To Dockerize it, create a Dockerfile that sets up the Node.js environment, installs packages, and exposes the port for the Vue dev server.

Step 2: Building the Node.js API Server

For the API, create a new directory and initialize a Node.js project. Install Express to handle routes and write a simple API that responds with a friendly message. Again, create a Dockerfile for the API to package everything into a container.

Step 3: Creating the WebSocket Server

WebSockets are essential for real-time features, and uWebSockets.js is your speed demon. Set up a new Node.js project, install uWebSockets.js, and write the WebSocket server code to handle connections and messages. Here's the most important part of the WebSocket server setup:

const uWS = require('uWebSockets.js');
uWS.App().ws('/*', {
    open: ws => ws.send('Welcome to uWebSockets.js!'),
    message: (ws, msg) => ws.send(`Received: ${Buffer.from(msg).toString()}`),
}).listen(8080, token => {
    console.log(token ? 'WebSocket running on port 8080' : 'Failed to start');
});

This code sets up a WebSocket server that handles client connections, incoming messages, and sends responses efficiently.

Step 4: Orchestrate Everything with Docker Compose

Now, use Docker Compose to link everything together. Create a docker-compose.yml file to define your services (Vue frontend, API server, WebSocket server) and map their ports. With this setup, you can run everything with a single command.

Step 5: Running the Project

Run docker-compose up --build to spin up your entire environment. Your Vue app will be live at http://localhost:5173, your API at http://localhost:3000, and your WebSocket server at ws://localhost:8080. Now, your setup is clean, organized, and ready for real-time development.

And there you have it—a modern, containerized environment for building scalable, real-time web apps.

⭐️ For the full details, check out the full article here

More code snippets here →

• bolt - Super-powered JavaScript project management

• Fraction.js - A rational numbers library written in JavaScript

• bun - fastest JavaScript package manager and bundler

• emoji-cheat-sheet - A markdown version emoji cheat sheet

More code libs here →

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