🚀 Back End Development and APIs Certification Projects

This repository contains five microservice APIs built as part of the freeCodeCamp.org Back End Development and APIs Certification. These projects demonstrate practical skills in Node.js, npm, Express, MongoDB, and Mongoose.

📑 Table of Contents

• Projects Overview
• Learning Outcomes
• Installation
• Usage

🛠️ Projects

1. Timestamp Microservice

🕒 An API that returns Unix and UTC timestamps for a given date string or the current date.

Example: /api/timestamp/2015-12-25 → { "unix": 1451001600000, "utc": "Fri, 25 Dec 2015 00:00:00 GMT" }

2. Request Header Parser Microservice

📋 An API that returns information about the client's IP address, language, and software from the request headers.

Example: /api/whoami → { "ipaddress": "192.168.1.1", "language": "en-US,en", "software": "Chrome/91.0.4472.124" }

3. URL Shortener Microservice

🔗 An API that shortens URLs and redirects users to the original URL when the short link is visited.

Example: POST /api/shorturl → { "original_url": "https://www.freecodecamp.org", "short_url": 1 }

4. Exercise Tracker

🏃‍♂️ An API that allows users to create accounts, log exercises, and retrieve exercise logs. Built with MongoDB and Mongoose.

Features: User creation, exercise logging, and filtering logs by date range

5. File Metadata Microservice

📂 An API that accepts file uploads and returns metadata about the uploaded file, such as name, type, and size.

Example: Upload a file → { "name": "example.jpg", "type": "image/jpeg", "size": 12345 }

📚 Learning Outcomes

Through these projects, I learned how to:

• Build RESTful APIs using Node.js and Express
• Manage project dependencies with npm
• Handle HTTP requests and responses
• Parse and validate user input
• Work with MongoDB and Mongoose for data storage and retrieval
• Implement file upload functionality
• Deploy and test microservices

⚙️ Installation

# Clone the repository
git clone https://github.com/yourusername/backend-dev-apis-projects.git

# Navigate to project directory
cd backend-dev-apis-projects

# Install dependencies
npm install

🖥️ Usage

Each microservice can be run independently:

# Navigate to specific project
cd timestamp-microservice

# Install project dependencies
npm install

# Start the service
npm start

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These projects were completed as part of the freeCodeCamp Back End Development and APIs curriculum.