User Management Service

A comprehensive microservice providing multi-tenant user management, role-based access control (RBAC), and organization hierarchy support for enterprise LMS platforms.

Requirements Document

1. Functional Requirements

1.1 Organization (Tenant) Management

REQ-ORG-001: Organization Creation

System must allow creation of new organizations with unique identifiers, names, and slugs

REQ-ORG-002: Custom Domain Support

Each organization must support custom domain mapping (e.g., learn.acme.com)

REQ-ORG-003: Organization Settings

Organizations must have customizable settings including branding (logo, colors), feature flags, and regional preferences

REQ-ORG-004: Organization Status Management

Support for organization lifecycle states: active, trial, suspended, archived

REQ-ORG-005: Organization Metadata

Track creation date, last update, and maintain audit trail of organization changes

1.2 User Management

REQ-USER-001: User Registration

Users must be able to register with email, password, first name, and last name within an organization context

REQ-USER-002: Email Uniqueness per Organization

Email addresses must be unique within an organization but can be reused across different organizations

REQ-USER-003: User Profile Management

Users must be able to update their profile information including name, avatar, bio, and custom fields stored as JSONB

REQ-USER-004: User Status Management

Support user lifecycle states: active, inactive, suspended, pending verification

REQ-USER-005: Email Verification

System must track email verification status and send verification emails

REQ-USER-006: Last Login Tracking

System must record and display last login timestamp for each user

REQ-USER-007: Bulk User Operations

Admins must be able to import, export, and bulk update users via CSV or API

1.3 Role & Permission Management

REQ-ROLE-001: Role Creation

Organizations must be able to create custom roles with names and descriptions

REQ-ROLE-002: System Roles

System must support predefined system roles that cannot be deleted (e.g., Admin, Super Admin)

REQ-ROLE-003: Role Uniqueness

Role names must be unique within an organization but can be reused across organizations

REQ-PERM-001: Permission System

System must support fine-grained permissions with resource and action combinations (e.g., course.create, user.edit)

REQ-PERM-002: Global Permissions

Permissions must be defined globally and assignable to roles across all organizations

REQ-PERM-003: Permission Assignment

Admins must be able to assign and revoke permissions to/from roles dynamically

REQ-PERM-004: Multi-Role Support

Users must be able to have multiple roles simultaneously with cumulative permissions

REQ-PERM-005: Permission Checking

System must provide fast permission checking API for authorization decisions

1.4 Authentication & Security

REQ-AUTH-001: Password Security

Passwords must be hashed using bcrypt with minimum cost factor of 10

REQ-AUTH-002: Session Management

System must support secure session management with token-based authentication (JWT)

REQ-AUTH-003: Password Reset

Users must be able to reset passwords via secure email link with expiration

REQ-AUTH-004: Account Lockout

System must implement account lockout after configurable failed login attempts

REQ-AUTH-005: Multi-Factor Authentication (MFA)

System must support optional MFA via TOTP (Time-based One-Time Password)

2. Non-Functional Requirements

2.1 Performance Requirements

REQ-PERF-001: Response Time

User authentication and authorization checks must complete within 200ms for 95th percentile

REQ-PERF-002: Concurrent Users

System must support at least 10,000 concurrent authenticated users per organization

REQ-PERF-003: Database Queries

All database queries must utilize proper indexes to maintain sub-100ms query times

2.2 Security Requirements

REQ-SEC-001: Data Isolation

Complete data isolation must be enforced at database level using organization_id in all queries

REQ-SEC-002: API Authentication

All API endpoints must require authentication except public registration/login endpoints

REQ-SEC-003: Audit Logging

All user actions (create, update, delete) must be logged with timestamp and actor information

REQ-SEC-004: GDPR Compliance

System must support user data export and complete data deletion (right to be forgotten)

2.3 Scalability Requirements

REQ-SCALE-001: Multi-Tenant Scalability

System must support at least 1,000 organizations with independent scaling capabilities

REQ-SCALE-002: Horizontal Scaling

Microservice must be stateless to support horizontal pod autoscaling

REQ-SCALE-003: Caching Strategy

Implement Redis caching for permissions and role data to reduce database load

2.4 Availability & Reliability

REQ-AVAIL-001: Uptime

Service must maintain 99.9% uptime (less than 43 minutes downtime per month)

REQ-AVAIL-002: Database Backups

Automated daily backups with 30-day retention and point-in-time recovery capability

REQ-AVAIL-003: Health Checks

Implement liveness and readiness probes for Kubernetes orchestration

3. API Requirements

3.1 RESTful API Endpoints

POST /api/v1/organizations

Create new organization

GET /api/v1/organizations/:id

Get organization details

POST /api/v1/users

Register new user

GET /api/v1/users/:id

Get user profile

PATCH /api/v1/users/:id

Update user profile

POST /api/v1/auth/login

Authenticate user

POST /api/v1/roles

Create role

POST /api/v1/roles/:id/permissions

Assign permissions to role

POST /api/v1/users/:id/roles

Assign role to user

GET /api/v1/users/:id/permissions

Check user permissions

4. Data Requirements

4.1 Core Data Entities

Organizations

Primary tenant entity with settings, branding, and status

Users

User accounts scoped to organizations with profile data and authentication credentials

Roles

Organization-specific roles with names and descriptions

Permissions

Global permissions with resource-action pairs

Role-Permission Mappings

Junction table linking roles to their assigned permissions

User-Role Assignments

Junction table tracking which users have which roles

Requirements Validation

These requirements should be validated against the Database Design to ensure all functional requirements are supported by the data model. Check that each requirement has corresponding tables, columns, constraints, and indexes in the database schema. Missing mappings indicate potential gaps in implementation.