Home/ Projects/ Full Stack/Food Delivery App (Multi-Vendor)

Step-by-step guideAdvancedFull Stack Estimated: Multiple Weeks Est. 40h total

Progress:

Food Delivery App (Multi-Vendor)

Multi-vendor food ordering platform with carts, Stripe checkout, and live order tracking.

Tech Stack:ReactNode.jsExpressMongoDBMongooseStripeSocket.io

Roadmap Steps

Key Features

Concepts

Tech Stacks

Common Pitfalls

Prequisites

Interactive Project Checklist

Tick off requirements as you build to track real-time completion.

Completed

Step-by-Step Development Roadmap

Follow this chronological guide to build the project from scratch.

0 / 4 Steps Completed

Step 1

MongoDB Schema & Seed Data

3 key tasks

Model Restaurant, MenuItem, and Order collections with Mongoose.

Key Implementation Tasks

Define Mongoose schemas for Restaurant and Order models
Seed database with sample restaurants and food menus
Expose REST GET endpoints for restaurant listing

server/models/Order.js

const mongoose = require('mongoose');

const OrderSchema = new mongoose.Schema({
  customer: { type: mongoose.Schema.Types.ObjectId, ref: 'User', required: true },
  restaurant: { type: mongoose.Schema.Types.ObjectId, ref: 'Restaurant', required: true },
  items: [{
    name: String,
    price: Number,
    quantity: Number,
  }],
  totalAmount: Number,
  status: {
    type: String,
    enum: ['PLACED', 'PREPARING', 'OUT_FOR_DELIVERY', 'DELIVERED'],
    default: 'PLACED',
  },
  stripeSessionId: String,
}, { timestamps: true });

module.exports = mongoose.model('Order', OrderSchema);

Step 2

Stripe Payment Checkout Session

3 key tasks

Step 3

Socket.io Live Order Status Tracking

3 key tasks

Step 4

Vendor Dashboard & Launch

3 key tasks

Common Challenges & Debugging Solutions

Real issues students hit during development and how to troubleshoot them fast.

State Management

Stripe Webhook Missed Events

Issue: Network glitch causes webhook failure, leaving valid paid orders in UNPAID status.

Fix Solution:Commit webhook processing as idempotent by event ID, and run a scheduled background reconciliation job to verify unconfirmed Stripe session IDs.

API Errors

Socket Reconnection Missed Status Updates

Issue: Customer loses connection briefly while vendor updates status from PREPARING to OUT_FOR_DELIVERY.

Fix Solution:Refetch the current order status record from REST API upon socket reconnect event before resuming live WebSocket listeners.

State Management

Multi-Vendor Cart Conflict

Issue: Adding items from two different restaurants to a single cart confuses order processing.

Fix Solution:Enforce single-vendor cart rules: prompt user to clear existing cart items when adding an item from a different restaurant.

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Home/ Projects/ Full Stack/Food Delivery App (Multi-Vendor)

Step-by-step guideAdvancedFull Stack Estimated: Multiple Weeks Est. 40h total

Progress:

Food Delivery App (Multi-Vendor)

Multi-vendor food ordering platform with carts, Stripe checkout, and live order tracking.

Tech Stack:ReactNode.jsExpressMongoDBMongooseStripeSocket.io

Roadmap Steps

Key Features

Concepts

Tech Stacks

Common Pitfalls

Prequisites

Interactive Project Checklist

Tick off requirements as you build to track real-time completion.

Completed

Step-by-Step Development Roadmap

Follow this chronological guide to build the project from scratch.

0 / 4 Steps Completed

Step 1

MongoDB Schema & Seed Data

3 key tasks

Model Restaurant, MenuItem, and Order collections with Mongoose.

Key Implementation Tasks

Define Mongoose schemas for Restaurant and Order models
Seed database with sample restaurants and food menus
Expose REST GET endpoints for restaurant listing

server/models/Order.js

const mongoose = require('mongoose');

const OrderSchema = new mongoose.Schema({
  customer: { type: mongoose.Schema.Types.ObjectId, ref: 'User', required: true },
  restaurant: { type: mongoose.Schema.Types.ObjectId, ref: 'Restaurant', required: true },
  items: [{
    name: String,
    price: Number,
    quantity: Number,
  }],
  totalAmount: Number,
  status: {
    type: String,
    enum: ['PLACED', 'PREPARING', 'OUT_FOR_DELIVERY', 'DELIVERED'],
    default: 'PLACED',
  },
  stripeSessionId: String,
}, { timestamps: true });

module.exports = mongoose.model('Order', OrderSchema);

Step 2

Stripe Payment Checkout Session

3 key tasks

Step 3

Socket.io Live Order Status Tracking

3 key tasks

Step 4

Vendor Dashboard & Launch

3 key tasks

Common Challenges & Debugging Solutions

Real issues students hit during development and how to troubleshoot them fast.

State Management

Stripe Webhook Missed Events

Issue: Network glitch causes webhook failure, leaving valid paid orders in UNPAID status.

Fix Solution:Commit webhook processing as idempotent by event ID, and run a scheduled background reconciliation job to verify unconfirmed Stripe session IDs.

API Errors

Socket Reconnection Missed Status Updates

Issue: Customer loses connection briefly while vendor updates status from PREPARING to OUT_FOR_DELIVERY.

Fix Solution:Refetch the current order status record from REST API upon socket reconnect event before resuming live WebSocket listeners.

State Management

Multi-Vendor Cart Conflict

Issue: Adding items from two different restaurants to a single cart confuses order processing.

Fix Solution:Enforce single-vendor cart rules: prompt user to clear existing cart items when adding an item from a different restaurant.

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Continue building your skills with similar projects.

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Instant messaging app with WebSocket channels, online presence, and typing indicators.

ReactNode.jsExpressSocket.ioMongoDB+1 more

1 Week Est. 20h4 steps

View Project

AdvancedBackendStep-by-step

Distributed Async Job Queue

Background job pipeline with BullMQ, Redis, worker pools, retries, and dead-letter queues.

Node.jsBullMQRedisDocker

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AdvancedBackendStep-by-step

Caching Proxy Server from Scratch

Custom caching proxy server returning cached responses for identical endpoints requests.

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