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Quality Requirements Overview

Introduction​

Quality requirements define the non-functional characteristics that determine how well BookWorm performs its intended functions. These requirements are critical for ensuring the system meets user expectations and business objectives.

Quality Categories​

BookWorm's quality requirements are organized into six primary categories:

🚀 Performance​

  • Response Time: Sub-second response for 95% of requests
  • Throughput: Handle 1000+ concurrent users
  • Resource Efficiency: Optimal CPU and memory utilization

🛡️ Reliability​

  • Availability: 99.9% uptime target
  • Fault Tolerance: Graceful degradation under failure
  • Data Integrity: Zero data loss guarantee

📈 Scalability​

  • Horizontal Scaling: Auto-scaling based on demand
  • Load Handling: Support 10x traffic spikes
  • Geographic Distribution: Multi-region deployment capability

🔒 Security​

  • Authentication: OAuth 2.0/OIDC with Keycloak
  • Authorization: Role-based access control
  • Data Protection: Encryption at rest and in transit

🔧 Maintainability​

  • Testability: 80% code coverage minimum
  • Modularity: Clear service boundaries
  • Deployability: Automated CI/CD pipeline

👥 Usability​

  • Responsiveness: Mobile-first design
  • Accessibility: WCAG 2.1 compliance
  • User Experience: Intuitive interface design

Quality Measurement​

Quality requirements are measured through:

  • Automated Testing: Unit, integration, and end-to-end tests
  • Performance Monitoring: Real-time metrics and alerting
  • Security Scanning: Regular vulnerability assessments
  • User Feedback: Analytics and user experience metrics
  • Code Quality Gates: SonarQube analysis and reviews

Documentation Structure​

This section contains:

  1. Quality Tree: Visual representation of quality attributes and their relationships
  2. Quality Scenarios: Specific scenarios describing quality requirements in context
  3. Quality Assurance Measures: Testing strategies and validation approaches

Stakeholder Impact​

Quality requirements affect all stakeholders:

  • End Users: Fast, reliable, and secure experience
  • Developers: Maintainable and testable codebase
  • Operations: Scalable and monitorable system
  • Business: Cost-effective and competitive platform