Technology
Things to know before vibe coding
What you should know about the fundamentals of software and servers before stepping quickly into vibe coding.
Vibe coding isn’t really something super new. Even though computers are now typing code at lightning speed, the idea of boilerplate software was always there. Building something was always easy!
Unlike how popular it is getting these days, years ago, to build a mobile app, all you needed was a boilerplate repository, some quick changes to the app, and a few smart solutions from Stack Overflow, and boom—you were done!
Nowadays, of course, things have changed, and everything is way faster. But still, building something is not the hard part. The real problem is always bigger. The technical side you don’t care about right now is going to catch up to you. When you get thousands of users and your server suddenly gets stuck, you’ll have to find a way out—and that way isn’t going to be easy. Even AI won’t be able to save you. You know why?
Because AI doesn’t live inside your brain, and it doesn’t know every little corner of your project or what you’re actually thinking.
In this article, I’m going to focus on what you absolutely need to know before diving deep into vibe coding—stuff like deployment, security, databases, and how the business side fits in.
Is it really just a vibe coding thing?
Are you really trying to vibe-code just to pass the time? Or are you trying to solve a real problem?
- If you are just vibe coding with no real purpose or goal, that’s totally fine! But make sure you don’t let your end-users input any sensitive data. Keep it to a simple game or a quiz app, nothing more!
- If you are trying to solve a real problem but would prefer to do it quickly without hiring a software developer, then this article is definitely for you!
The Business (WHY AM I DOING THIS)
YES, if you’re writing code, it should stand for something! Define a realistic goal and know who your target audience is. Are you building a solution to a problem that people can’t solve right now?
Define the scope on your own. Write down your top 2 or 3 competitors, go over their apps, and really scan their UIs. Pay attention to the smallest details, even those boring, “sleeping” pages like Terms & Conditions, Terms of Use, or the About page. And most importantly, how do they actually make money or sell a product online?
Stack
Usually, people skip this part and just let AI choose the tech stack for them. But that doesn’t work when you gain hundreds of users and suddenly need to scale! Are you really going to let AI update your code, test it, push it, and test it again directly on production?
What if that fails?
Make sure to choose a stack that is super popular and has a huge online community. Some of those silly little bugs are things even AI can’t help you with—you’ll have to search for them online yourself. Imagine getting a 500 Internal Server Error on production. How are you going to explain to AI that the code is fine, but there’s something wrong with the server config?
So, be clear on this point from day one. Fixing a Django server isn’t the same as fixing a PHP Apache2 server. Decide now: which ecosystem is going to be easier for you to handle?
Local vs Public
Let’s break this down simply:
- Local only: Only you can access the app from your own machine.
- Local network: Only people connected to the same Wi-Fi/network can access the app.
- Public: Anyone on the internet who has the link or your site’s domain can access it.
Is your app just a local tool used within your own company internally, or is it going to be available to the entire world?
In both cases, you have to get the configuration right. A local app doesn’t need the same setup as a public one. For a public app, do you have guards in place to block unauthorized access? Are all your private documents and database files readable by search engines and random visitors? Is that what you want? Ask yourself these questions before you deploy anything to production and make it public!
NoSQL vs SQL Databases
NoSQL databases are generally non-relational databases that don’t use the traditional table model. Many NoSQL databases, like MongoDB, store data as flexible documents.
Imagine a user document in MongoDB. It looks a lot like JSON:
{
"_id": "60c72b2f9b1d8b23c8a4b62d",
"name": "John Doe",
"email": "johndoe@example.com",
"preferences": {
"theme": "dark",
"notifications": true
}
}
SQL databases, on the other hand, are relational, table-based systems that use predefined schemas (like spreadsheets with strict rules) and provide constraints to maintain data integrity.
For example, suppose you have a users table and you want every user’s email address to be unique. In SQL, you define the email column with a UNIQUE constraint:
CREATE TABLE users (
id INTEGER PRIMARY KEY,
name VARCHAR(100),
email VARCHAR(255) UNIQUE
);
If johndoe@example.com already exists and you try to insert another user with that same email, the database itself will say, “Nope!” and reject the operation.
With NoSQL, since schemas are super flexible, keeping things consistent can sometimes be tricky unless you enforce it in your application code.
Could you write application-level validation to check if the email already exists? Sure, but that check alone isn’t always enough to guarantee uniqueness. If two users click “Register” at the exact same millisecond, both requests might check the database at the same time, see that the email doesn’t exist, and write the duplicate.
That’s why the best approach is to use application-level validation for a nice, friendly error message, but back it up with a database-level UNIQUE constraint for absolute data integrity.
Database Design
How complex is your database or logic? Which users are allowed to access which pages or documents? Here comes the database design part. Of course, we aren’t going to dive very deep into this, because it’s a whole field of its own.
But the key takeaway here is that forecasting your database structure and requirements before you start coding will save you sooooo much time in the future.
Let’s look at an example. Imagine a very simple bookstore application with these tables:
users(id,email,username,fullname,country,role) -> A user can be a normal buyer or an author who can manage books.books(id,bookName,bookSummary,publishedDate,salePrice,stockQty) -> One book can have multiple authors.purchases(id,user_id,book_id,purchase_date) -> Connects a user to a book purchase (reducing stock by one!).authors(id,user_id,name,about) -> An author profile that links back to auser_id.
Imagine these connections behind the scenes:
[ users ] ─── (1-to-1 link) ───> [ authors ]
│ │
(1-to-many) (many-to-many)
│ │
▼ ▼
[ purchases ] <─── (1-to-many) ─── [ books ]
Now imagine that after deploying this app, you suddenly decide to add subscription tiers, book rentals, and promotional codes. If you didn’t think about these relationships early on, changing the database structure later becomes a huge mess.
And this is for a tiny app! Real-world apps have dozens or hundreds of tables with complicated relationships.
Imagine launch day. You get a surge of users from your waitlist, and they immediately start sending you feature requests and feedback about your app. You’ll spend way more time hacking and fixing broken database schemas than actually building cool features if you didn’t design the foundation properly from the beginning.
So take a breath, open a digital whiteboard (or grab a napkin), and sketch your tables first.
And one more thing: don’t treat your production database like a playground. Sure, you can delete columns or drop tables in production if there’s a legitimate reason, but never do it casually or on a whim. Schema changes should be planned using database migrations, tested thoroughly on your local machine, and backed up before they go live so you don’t accidentally wipe out your users’ data or break your live site!
Front & Back
Understanding how the frontend and backend talk to each other is crucial before you start vibe coding, otherwise you’ll be writing code in the wrong places!
-
Frontend is what the user actually sees and interacts with. It’s where you design forms, place inputs, and render static text. The logo, header, buttons, and footer are all frontend.
Twenty-five years ago, developers just wrote basic HTML and CSS. But with the rise of modern JavaScript frameworks like React, Vue, and Tailwind, frontend became super powerful, handling complex UI, smooth animations, and state management.
Here is a simple frontend form example that gathers a user’s input and sends it to the backend:
<!-- HTML Form on the browser --> <form id="registerForm"> <input type="email" id="email" placeholder="Enter your email" required /> <button type="submit">Sign Up</button> </form> <script> // JavaScript code sending the data to the backend document.getElementById('registerForm').addEventListener('submit', async (e) => { e.preventDefault(); const email = document.getElementById('email').value; const response = await fetch('https://api.myapp.com/register', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ email }) }); const data = await response.json(); alert(data.message); }); </script> -
Backend is the engine under the hood. It lives on a server, contains your business logic, and directly talks to your database. It handles things like authentication, payments, and data validation where security and secrecy are vital.
For example, when a user clicks “Sign Up” on your frontend, it triggers a backend request to
/register. Behind the scenes, the backend runs code that checks your database and decides what to do:// Node.js/Express Backend endpoint app.post('/register', async (req, res) => { const { email } = req.body; // 1. Check if user already exists in the database const existingUser = await db.query('SELECT * FROM users WHERE email = $1', [email]); if (existingUser.length > 0) { // 2. If yes, send an error back to the frontend return res.status(400).json({ message: "Email already exists!" }); } // 3. If no, create the user and save them await db.query('INSERT INTO users (email) VALUES ($1)', [email]); return res.status(201).json({ message: "Welcome aboard!" }); });Why is it called the backend? Because it runs on a remote server away from the user’s browser. While the user just sees a loading spinner and then a success message, the server is executing database queries, validating data, and sending emails behind the scenes. You won’t see any of this unless you’re digging into server logs and debugging!
UI & UX Design
- UI = User Interface (how it looks)
- UX = User Experience (how it feels)
Great companies and successful founders spend weeks deciding on their brand identity. Your design stands for the value of your project, the message you want to send, and the overall vibe. Think about Duolingo’s friendly green owl or Booking.com’s conversion-focused layout.
Don’t just launch with default browser styles! Try browsing Behance or Dribbble for UI templates that fit your vision. Stick to a clean color palette. Just because an app works smoothly doesn’t mean people will like it if the colors are jarring or look unprofessional. Also, standard system fonts are used everywhere, so why not find a clean, unique font that actually suits your project?
Don’t let AI make every single design decision here. It has to be your taste. Check out Tailwind CSS or Bootstrap-backed UI kits online to see what looks modern, and use them as a starting point.
User Experience is where the real magic happens. If you care about UX, your users are way more likely to stick around!
For example, simple things like making form inputs wide and easily clickable on mobile, adding clear error messages instead of a blank screen, or keeping buttons exactly where users expect them to be can elevate your app from a “buggy prototype” to a “polished product.”
Security (Most Important)
How much do you care about security? What kind of private information are you holding in your database? No matter what your app does, security is a huge dealbreaker.
Imagine if User A could just change the URL ID and read User B’s private messages or order history. That is called an IDOR (Insecure Direct Object Reference) vulnerability, and it can kill your startup instantly.
For example, look at this insecure backend code vs. a secure check:
// ❌ INSECURE: Anyone can access any invoice by changing the ID in the URL!
app.get('/invoice/:id', async (req, res) => {
const invoice = await db.query('SELECT * FROM invoices WHERE id = $1', [req.params.id]);
res.json(invoice);
});
// SECURE: Check if the logged-in user actually owns that invoice!
app.get('/invoice/:id', async (req, res) => {
const userId = req.user.id; // From your auth middleware
const invoice = await db.query('SELECT * FROM invoices WHERE id = $1 AND user_id = $2', [req.params.id, userId]);
if (invoice.length === 0) {
return res.status(403).json({ message: "Unauthorized access!" });
}
res.json(invoice);
});
Ask yourself:
- Do you have middleware checking every single request to verify who is sending it?
- Are uploaded files (like private PDFs or photos) open to the public?
- Where are you storing API secrets and passwords?
One of the most dangerous things happening nowadays is people treating public JSON files as a makeshift database. Don’t ever store sensitive information in a raw JSON file on your server. It’s begging to be leaked!
More importantly, keep your stack up to date. If you’re running old versions of Node.js, Python packages, or React, your app is sitting vulnerable to known exploits. Don’t ever say, “Oh, my app is too small, no one will target me.” Hackers don’t sit there manually targeting you; they write automated bots that constantly scan millions of IP addresses for known vulnerabilities. It happened with WordPress, and it can happen to any custom stack if you aren’t paying attention.
To keep track of known vulnerabilities, check out:
Containers & Docker
The easiest tool to think of here is Docker.
Imagine you are working on a project that uses Node.js version 18, but a year from now you try to run it on a new machine that has Node.js version 22, and boom—everything breaks because of version mismatches. Or you try to hand the project over to another developer and they spend three days trying to install all the databases and packages.
A Docker container wraps up your code, your database, your specific runtime version, and all dependencies into a single package that runs exactly the same way on any machine.
To give you an idea, here is a very simple Dockerfile that sets up a Node.js app:
# Use a specific, stable version of Node.js
FROM node:20-alpine
# Set the working directory inside the container
WORKDIR /app
# Copy dependency files and install them
COPY package*.json ./
RUN npm install
# Copy the rest of your application code
COPY . .
# Expose the port your app runs on
EXPOSE 3000
# Start the application
CMD ["node", "server.js"]
With this, you or anyone else can just run docker build and docker run, and Docker handles installing the exact environment and dependencies behind the scenes. It gets rid of those annoying “well, it worked on my machine!” errors.
Deployment & GitHub Actions
Deploying an app basically means moving it from your own local machine to a live server so anyone with internet access can use it.
If your app supports advanced features like user login, databases, or background workers, you are going to need a backend hosting provider (like Render, Fly.io, Railway) or database services (like Supabase).
On the other hand, if your app is a purely frontend “static” site (like a personal portfolio, a blog, or a simple puzzle game with no backend), you don’t need to manage a server at all! You can host it completely free on platforms like Netlify, Vercel, or Cloudflare Pages, and you’re good to go.
Nowadays, the modern standard is linking your project to a GitHub repository and setting up GitHub Actions. This sets up a “CI/CD” (Continuous Integration / Continuous Deployment) pipeline. Whenever you push code to GitHub, an automated workflow triggers to:
- Install dependencies: Install all packages and libraries.
- Build the code: Compile and bundle your assets so they are small and fast.
- Run the tests: Run automated checks to make sure you didn’t accidentally break existing features.
- Deploy: If everything passes, deploy to production. If any step fails, the deployment is blocked!
Here is what a simple GitHub Actions workflow file (like .github/workflows/deploy.yml) looks like:
name: Build and Test
on:
push:
branches: [ main ]
jobs:
build-and-test:
runs-on: ubuntu-latest
steps:
- name: Checkout repository code
uses: actions/checkout@v4
- name: Set up Node.js
uses: actions/setup-node@v4
with:
node-version: '20'
- name: Install dependencies
run: npm install
- name: Run build step
run: npm run build
- name: Run tests
run: npm test
There are tons of ready-to-use workflows online. All you have to do is find the one that fits your tech stack, drop it in your repository, and let GitHub handle the heavy lifting for you.
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