🎓 Learning Management System (LMS) - Microservice Architecture

📅 Project Proposal
The Learning Management System (LMS) is a microservice-driven application designed to simulate the full functionality of a modern online education platform. It emphasizes modular development, scalability, and cloud-native principles using containerized microservices. This architecture supports agile DevOps, high availability, and security across various educational operations, including course handling, payments, assessments, and more.

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🛠️ System Architecture Components

1. 🔐 Authentication Service

• Handles user registration and login (students, instructors, admins)
• Implements JWT-based session management
• Manages user roles and permissions
• Stores credentials securely (e.g., bcrypt hashing)

2. 📚 Course Management Service

• Enables CRUD operations for courses
• Manages categories, prerequisites, and course metadata
• Associates courses with instructors
• Supports publishing/unpublishing of courses

3. 🎥 Lecture Service

• Manages video/audio/text lectures for courses
• Supports CRUD operations for lecture content
• Tracks lecture order and linkage with specific courses
• Supports time-stamped annotations and progress tracking

4. 💳 Payment Service

• Handles course payments and refunds
• Integrates with third-party payment gateways
• Generates payment receipts
• Tracks user purchases and billing history

5. 🗄️ Storage Service

• Manages file uploads for lecture materials, assignments, certificates
• Provides secure access to downloadable resources
• Handles file versioning and metadata tracking

6. 🔔 Notification Service

• Sends notifications via email, SMS, or in-app alerts
• Triggers updates for assignment deadlines, course releases, etc.
• Supports event-driven communication across services

7. 📝 Assessment Service

• Manages quizzes, tests, and exams
• Supports auto-grading and manual evaluation
• Handles attempt limits, timing, and scoring
• Links assessments to specific course modules

8. 🛠️ Support Service

• Offers ticket-based or live chat student support
• Tracks issue status, response times, and resolutions
• Allows FAQs and community-based troubleshooting

9. 🏅 Certification Issue Service

• Generates certificates upon course completion
• Verifies achievement against assessment scores
• Includes instructor signatures and completion date
• Supports digital and printable certificate formats

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📊 ER Diagram (Text Representation)

[User]
 ├─ user_id (PK)
 ├─ username
 ├─ email
 ├─ password_hash
 ├─ role (student/instructor/admin)

[Course]
 ├─ course_id (PK)
 ├─ instructor_id (FK → User.user_id)
 ├─ title
 ├─ description
 ├─ category
 ├─ status (published/unpublished)

[Lecture]
 ├─ lecture_id (PK)
 ├─ course_id (FK → Course.course_id)
 ├─ title
 ├─ content_url
 ├─ duration

[Assessment]
 ├─ assessment_id (PK)
 ├─ course_id (FK → Course.course_id)
 ├─ title
 ├─ type (quiz/exam)
 ├─ total_marks

[Payment]
 ├─ payment_id (PK)
 ├─ user_id (FK → User.user_id)
 ├─ course_id (FK → Course.course_id)
 ├─ amount
 ├─ timestamp

[Certificate]
 ├─ certificate_id (PK)
 ├─ user_id (FK → User.user_id)
 ├─ course_id (FK → Course.course_id)
 ├─ issue_date
 ├─ certificate_url

🎞 System Diagram

lms-microservice

Development of an Educational Platform for Online Learning Using Microservices

intro

try to run open all backends seprately for dev

storage service workflow

1. Create a Google Cloud service account and a JSON key.
2. Place key.json at the repository root.
3. Create a new bucket and grant the service account access.
4. Set SERVICE_NAME_BUCKET and SERVICE_CAPTCHA_CODE environment variables.

TEST User email & Passwords

• Admin admin1@gmail.com |PWD Tu1234567@
• Lec lecturer@gmail.com |PWD Tu1234567@
• Student student@gmail.com |PWD Tu1234567@

Payment Service

1. venv\Scripts\activate
2. pip install -r requirements.txt
3. python app.py

how to run on mac

• chmod +x open_all_backend.
• ./open_all_backend.sh

Start & Build All containers.

docker-compose up --build

Run the containers

docker-compose up