🚀 Node.js Backend Projects Portfolio

Welcome to my backend projects collection built with Node.js, Express, and MongoDB (Mongoose) following the clean MVC (Model-View-Controller) pattern. This repository showcases a step-by-step progress from basic CRUD services to advanced pagination, dynamic sorting, and case-insensitive regex search engines.

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📂 Repository Index

Project Folder	Assignment	Key Highlights	Links & Docs
6.1-notes-crud-assignment	Assignment 01	Basic CRUD, bulk endpoints, Mongoose schema validations, status code management.	📖 Postman Docs 🌐 Live Deployed API
06.2-advanced-routing-queries-assignment	Assignment 02	Route parameters, dynamic query filters, pagination metadata, custom sorting fields.	📖 Postman Docs 🌐 Live Deployed API
06.3-search-assignment	Assignment 03	Text search via MongoDB $regex, dual/triple concepts merge, Master Query Builder.	📖 Postman Docs 🌐 Live Deployed API

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💻 Projects Overview

1. Notes Management CRUD API (6.1-notes-crud-assignment)

• Objective: Implement a solid backend CRUD foundation from scratch.
• Key Features:
  • Create, read, update, replace, and delete notes.
  • Supports bulk creation (POST /api/notes/bulk) and bulk deletion (DELETE /api/notes/bulk).
  • Implements custom Mongoose validation for title and content fields.
  • Returns standard API response payloads in JSON format.

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2. Advanced Routing & Queries API (06.2-advanced-routing-queries-assignment)

• Objective: Learn dynamic route variables and backend query parameters.
• Key Features:
  • Dynamic route parameter path routing: /api/notes/category/:category and /api/notes/status/:isPinned.
  • Exclude fields from JSON payloads using MongoDB projection: /api/notes/:id/summary.
  • Pagination offset calculations: (page - 1) * limit with detailed metadata block (totalPages, hasNextPage, total records count).
  • Dynamic column sorting (asc/desc) using validation logic to block invalid sort params.

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3. Notes Search & Combined Queries API (06.3-search-assignment)

• Objective: Combine multiple queries, sorting, pagination, and text search into production-level endpoints.
• Key Features:
  • Case-insensitive regex text search across titles, content, or both using MongoDB $or logic.
  • Merged logic endpoints (e.g. search + paginate, filter + sort + paginate) that safely combine query parameters before querying the database.
  • Master Query Endpoint (GET /api/notes/query): A single request handler supporting optional search keywords (q), category filters, pinning flags, dynamic sorting fields, and pagination limits simultaneously.

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⚙️ How to Run Locally

To boot any of the assignments locally:

1. Clone the repository and navigate into the target folder:

   git clone https://github.com/Raushankumar0720/backend-projects.git
   cd backend-projects/<folder-name>

2. Install npm packages:

   npm install

3. Setup env variables: Create a .env file in the folder root:

   MONGO_URI=your_mongodb_connection_string
   PORT=5000

4. Run server in development mode:

   npm run dev