🚀 Task Manager API

A simple Task Manager REST API built using Java and Spring Boot that allows users to create, manage, update, and delete tasks efficiently.

This backend service demonstrates CRUD operations, REST API design, and backend architecture principles.

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🌐 Live API

Test the deployed API here:

https://task-manager-api-demo.onrender.com/tasks

Refresh or call multiple endpoints to test the API responses.

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✨ Features

✔ Task CRUD Operations ✔ RESTful API architecture ✔ Lightweight backend service ✔ Easy API testing using Postman or Curl ✔ Clean controller-service architecture ✔ Cloud ready backend API

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🛠 Tech Stack

Technology	Usage
Java 17	Programming Language
Spring Boot	Backend Framework
Maven	Build Tool
REST API	API Architecture
Render	Cloud Deployment

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📂 Project Structure

task-manager-api
│
├── src
│   ├── main
│   │   ├── java
│   │   │   └── task_manager
│   │   │        ├── controller
│   │   │        │    └── TaskController.java
│   │   │        │
│   │   │        ├── service
│   │   │        │    └── TaskService.java
│   │   │        │
│   │   │        └── TaskManagerApplication.java
│   │   │
│   │   └── resources
│   │        └── application.properties
│
├── pom.xml
└── README.md

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🏗 Architecture Diagram

Client / Browser
      |
      | HTTP Request
      v
Spring Boot Controller
(TaskController)
      |
      v
Service Layer
(TaskService)
      |
      v
Business Logic
      |
      v
API Response

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🔄 API Request Flow

Client Request
      |
      v
Controller Layer
      |
      v
Service Layer
      |
      v
Process Request
      |
      v
Send Response

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🌐 API Endpoints

Method	Endpoint	Description
GET	/tasks	Get all tasks
GET	/tasks/{id}	Get task by ID
POST	/tasks	Create a new task
PUT	/tasks/{id}	Update task
DELETE	/tasks/{id}	Delete task

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📦 Example Request

Create Task

POST /tasks

{
 "title": "Learn Spring Boot",
 "description": "Practice backend development",
 "completed": false
}

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📦 Example Response

Successful Request

Task created successfully 🚀

Error Response

Task not found ❌

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▶ Run Locally

Clone repository

git clone https://github.com/ChinmayaKumarSingh/Task-Manager-Api.git

Navigate to project

cd Task-Manager-Api

Run application

mvn spring-boot:run

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🧪 Test API using Curl

Get all tasks

curl https://task-manager-api-demo.onrender.com/tasks

Create task

curl -X POST https://task-manager-api-demo.onrender.com/tasks \
-H "Content-Type: application/json" \
-d '{"title":"New Task","description":"Demo Task","completed":false}'

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📈 Future Improvements

• Add database integration (MySQL / PostgreSQL) • Add authentication using JWT • Add Swagger API documentation • Add Docker containerization • Add task priority and filtering

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👨‍💻 Author

Chinmaya Kumar Singh

Backend Developer Java | Spring Boot | REST APIs

GitHub https://github.com/ChinmayaKumarSingh