🔥 Daily Digest: Ace Coding Interviews, Master System Design, and Build Scalable Apps

Daily Issue #74 | Subscribe to DS | Daily Sandbox Pro

This issue is all about mastering system design, prepping for coding interviews, and building powerful apps. Here's what's inside:

• Coding Interview Prep: A comprehensive, multi-month study plan for landing a big tech job.

• System Design: Learn to architect large-scale systems like a pro.

• Bitwise Shifts: Get a grip on bitwise operations in JavaScript.

• ES2025 Import Attributes: A peek at the future of JavaScript imports.

• Tutorial of the Day: Create a RESTful API using Node.js and Express.

• Coding Toolbox:

  • wiki: A modern Node.js-powered wiki app.

  • hexo: Simple and powerful blog framework for Node.js.

  • n8n: Automate workflows with this extendable tool.

  • nest: Build scalable, enterprise-ready server-side apps with TypeScript/JavaScript.

• Coding Interview University, multi-month study plan for becoming a software engineer for a large company

• Learn how to design large-scale systems

• Understanding Bitwise Shifts in JavaScript

• JavaScript Import Attributes (ES2025)

More news here →

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Building a RESTful API with Node.js and Express

Imagine a bustling marketplace where vendors serve your every need with speed and precision. That’s what a RESTful API is: a well-organized system allowing apps to communicate seamlessly, like shoppers finding exactly what they need. At the heart of this digital bazaar? Node.js and Express—the duo that makes building an API feel like a creative masterpiece.

Building Your API: The Blueprint

Our RESTful API will manage vendors, performing CRUD operations (Create, Read, Update, Delete) like a well-organized marketplace. Here’s how to get started:

1. Set Up Your Server: Create app.js and write your Express code:

const express = require('express');
const app = express();
const port = 3000;

app.use(express.json()); // Middleware to parse JSON

app.get('/', (req, res) => res.send('Welcome to our RESTful API!'));

app.listen(port, () => console.log(`API running on http://localhost:${port}`));

2. Create CRUD Routes: Manage an in-memory list of vendors with endpoints:

let vendors = [{ id: 1, name: 'Vendor One', specialty: 'Fruit' }];

app.post('/vendors', (req, res) => {
    const newVendor = { id: vendors.length + 1, name: req.body.name, specialty: req.body.specialty };
    vendors.push(newVendor);
    res.status(201).json(newVendor);
});

app.get('/vendors', (req, res) => res.json(vendors));

app.get('/vendors/:id', (req, res) => {
    const vendor = vendors.find(v => v.id === parseInt(req.params.id));
    if (!vendor) return res.status(404).send('Vendor not found');
    res.json(vendor);
});

app.put('/vendors/:id', (req, res) => {
    const vendor = vendors.find(v => v.id === parseInt(req.params.id));
    if (!vendor) return res.status(404).send('Vendor not found');
    vendor.name = req.body.name || vendor.name;
    vendor.specialty = req.body.specialty || vendor.specialty;
    res.json(vendor);
});

app.delete('/vendors/:id', (req, res) => {
    const vendorIndex = vendors.findIndex(v => v.id === parseInt(req.params.id));
    if (vendorIndex === -1) return res.status(404).send('Vendor not found');
    vendors.splice(vendorIndex, 1);
    res.status(204).send();
});

3. Run Your API: Use nodemon to keep your server running:

nodemon app.js

Why Node.js and Express?

• Speed and Performance: Node.js handles high traffic effortlessly with its non-blocking, event-driven architecture.

• Ease of Use: Express simplifies API building with intuitive methods.

• Scalability: Ready to grow as your data marketplace expands.

And there you have it: a RESTful API that’s efficient, easy to maintain, and robust. Just like a master craftsman, you’ve created a data marketplace where every endpoint is a vendor, ready to serve requests gracefully. So dive in, test your creation, and enjoy the power of building with Node.js and Express!

⭐️ This is just a small part of the tutorial. For the full details, check out the full article here

More tutorials here →

Newsletter Recommendation

• wiki - A modern and powerful wiki app built on Node.js

• hexo - A fast, simple & powerful blog framework, powered by Node.js.

• n8n - an extendable workflow automation tool

• nest - A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript

More code libs here →

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