Non-Functional Requirements Example

Project Name: E-commerce Platform

Document Version: 1.0

Date: [Insert Date]

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1. Performance

• NFR1.1: The system must be able to handle up to 5,000 concurrent users during peak hours without performance degradation.
• NFR1.2: Page load time must not exceed 3 seconds for 95% of the users on standard broadband connections.
• NFR1.3: The checkout process must complete within 2 seconds after the user submits payment details.

2. Scalability

• NFR2.1: The system must support future growth, accommodating up to 10 million registered users without architectural changes.
• NFR2.2: The platform must be able to scale horizontally to add more servers as demand increases.

3. Reliability & Availability

• NFR3.1: The system must have an uptime of 99.9% per month, ensuring minimal downtime.
• NFR3.2: In case of a system failure, the platform must recover within 5 minutes, and no critical data should be lost.
• NFR3.3: All critical transactions, such as payments, must be stored in a reliable, distributed database to prevent data loss.

4. Security

• NFR4.1: All user data must be encrypted in transit and at rest using industry-standard encryption algorithms (e.g., TLS 1.3, AES-256).
• NFR4.2: The platform must implement multi-factor authentication (MFA) for administrative access.
• NFR4.3: The system must be compliant with data protection regulations, such as GDPR or CCPA, and conduct regular security audits.
• NFR4.4: The platform must prevent common security threats, including SQL injection, Cross-Site Scripting (XSS), and Cross-Site Request Forgery (CSRF).

5. Usability

• NFR5.1: The user interface must be intuitive and allow a new user to complete a purchase within 5 minutes without prior training.
• NFR5.2: The platform must be accessible and conform to WCAG 2.1 AA standards to ensure it is usable by people with disabilities.
• NFR5.3: Error messages must be descriptive and provide users with clear guidance on how to resolve issues.

6. Maintainability

• NFR6.1: The system must have a modular architecture to simplify updates and maintenance.
• NFR6.2: Code documentation must be comprehensive, with at least 80% code coverage by automated tests.
• NFR6.3: The platform must support automated deployment processes to reduce the risk of human error.

7. Portability

• NFR7.1: The platform must be compatible with all major browsers, including Chrome, Firefox, Safari, and Edge.
• NFR7.2: The system must function seamlessly on both desktop and mobile devices, with no loss of functionality.

8. Compliance

• NFR8.1: The platform must comply with PCI-DSS standards for payment processing.
• NFR8.2: All system logs must be retained for at least one year to comply with regulatory auditing requirements.

9. Disaster Recovery

• NFR9.1: The system must have a disaster recovery plan, including daily backups and off-site storage of critical data.
• NFR9.2: The recovery point objective (RPO) must be 4 hours, and the recovery time objective (RTO) must be 1 hour.

10. Localization

• NFR10.1: The platform must support multiple languages and currencies, with the ability to dynamically adjust based on user location.
• NFR10.2: All date, time, and number formats must adapt to the user’s locale settings.