134 lines
8.5 KiB
Plaintext
134 lines
8.5 KiB
Plaintext
Notification System User Requirements
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1. Notification Templates
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Functional Requirements
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Template Creation: Users must be able to create reusable notification templates with customizable content, subject lines, and formatting
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Multi-Channel Support: Templates must support different notification channels (email, SMS, push notifications, in-app notifications)
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Dynamic Content: Templates must support placeholder variables and merge fields for personalized content (user name, dates, amounts, etc.)
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Rich Content: Email templates must support HTML formatting, images, links, and attachments
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Template Versioning: System must maintain version history of templates with ability to revert to previous versions
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Template Categories: Users must be able to organize templates by categories or tags for easy management
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Preview Functionality: Users must be able to preview templates before saving or sending
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Localization Support: Templates must support multiple languages and localization
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Non-Functional Requirements
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Templates must load within 2 seconds
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System must support at least 1000 active templates
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Template editor must be responsive and work on mobile devices
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Must support templates up to 100KB in size
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2. Notification Triggers / Rules
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Functional Requirements
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Event-Based Triggers: System must trigger notifications based on specific events (user registration, purchase completion, password reset, etc.)
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Condition-Based Rules: Users must be able to set complex conditional logic (if/then/else scenarios)
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Time-Based Triggers: Support for scheduled notifications, recurring notifications, and time-delayed triggers
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User Segmentation: Ability to target specific user groups based on demographics, behavior, or custom attributes
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Trigger Prioritization: System must support priority levels for different trigger types
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Rule Testing: Users must be able to test rules before activation
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Rule Dependencies: Support for chained triggers and dependent rule execution
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External API Triggers: Ability to trigger notifications via external API calls or webhooks
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Non-Functional Requirements
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Rules must be evaluated within 100 milliseconds
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System must support at least 500 active rules simultaneously
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Rules engine must be fault-tolerant and handle errors gracefully
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Must support real-time trigger processing
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3. Notification Queue & Scheduler
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Functional Requirements
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Queue Management: System must queue notifications and process them in order with different priority levels
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Batch Processing: Ability to group and send notifications in batches to optimize delivery
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Scheduling: Users must be able to schedule notifications for future delivery at specific dates and times
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Retry Logic: Failed notifications must be automatically retried with configurable retry intervals
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Rate Limiting: System must respect rate limits for different channels and recipients
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Queue Monitoring: Real-time visibility into queue status, pending notifications, and processing rates
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Dead Letter Queue: Failed notifications after maximum retries must be moved to a separate queue for manual review
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Timezone Handling: Proper handling of different timezones for scheduled notifications
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Non-Functional Requirements
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Queue must process at least 10,000 notifications per minute
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System must maintain 99.9% uptime for queue processing
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Queue data must be persistent and survive system restarts
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Must support horizontal scaling of queue workers
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4. Notification Delivery Engine
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Functional Requirements
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Multi-Channel Delivery: Support for email, SMS, push notifications, and in-app notifications
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Delivery Status Tracking: Real-time tracking of delivery status (sent, delivered, failed, bounced)
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Fallback Mechanisms: Automatic fallback to alternative channels if primary delivery fails
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Delivery Optimization: Intelligent routing and timing optimization for better delivery rates
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Bounce Handling: Automatic handling of bounced emails and invalid phone numbers
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Delivery Reporting: Comprehensive delivery reports with success rates and failure reasons
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Third-Party Integration: Integration with popular email services (SendGrid, AWS SES) and SMS providers
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Webhook Support: Delivery status callbacks via webhooks for external systems
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Non-Functional Requirements
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Delivery engine must process 99.5% of notifications successfully
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Average delivery time must be under 30 seconds for high-priority notifications
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System must handle peak loads of 50,000 notifications per hour
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Must maintain delivery logs for at least 90 days
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5. User Preferences & Subscription Settings
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Functional Requirements
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Preference Management: Users must be able to manage their notification preferences across all channels
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Granular Controls: Fine-grained control over notification types, frequency, and timing
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Subscription Categories: Ability to subscribe/unsubscribe from different notification categories
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Quiet Hours: Users must be able to set "do not disturb" time periods
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Channel Preferences: Option to choose preferred notification channels for different types of messages
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Frequency Limits: Users can set maximum frequency limits for non-critical notifications
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One-Click Unsubscribe: Easy unsubscribe mechanism with single-click options
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Preference Import/Export: Ability to backup and restore notification preferences
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Non-Functional Requirements
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Preference changes must take effect within 5 minutes
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Preference interface must load within 3 seconds
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System must respect user preferences 100% of the time
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Must support preferences for at least 1 million users
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6. Notification Logs & Audit Trail
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Functional Requirements
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Comprehensive Logging: Complete audit trail of all notification activities including creation, modification, and delivery
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Search and Filter: Advanced search capabilities with filters by date, user, channel, status, and content
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Delivery Analytics: Detailed analytics on delivery rates, open rates, click-through rates, and engagement metrics
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Error Logging: Detailed error logs with root cause analysis and troubleshooting information
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Export Functionality: Ability to export logs and reports in various formats (CSV, PDF, Excel)
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Retention Policies: Configurable data retention policies for different types of logs
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Compliance Reporting: Generate compliance reports for regulatory requirements
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Real-Time Monitoring: Live dashboard showing current notification activity and system health
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Non-Functional Requirements
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Log queries must return results within 5 seconds
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System must retain logs for minimum 1 year
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Logs must be searchable and indexable
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Must support concurrent access by multiple administrators
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7. Admin Panel / Management Interface
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Functional Requirements
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Dashboard Overview: Comprehensive dashboard showing key metrics, system health, and recent activity
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User Management: Admin tools to manage user accounts, permissions, and notification preferences
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System Configuration: Interface to configure system settings, rate limits, and integration parameters
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Template Management: Centralized management of all notification templates with approval workflows
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Rule Management: Interface to create, modify, and monitor notification rules and triggers
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Reporting Tools: Built-in reporting tools with customizable charts and metrics
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System Monitoring: Real-time monitoring of system performance, queue status, and delivery rates
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Role-Based Access: Different access levels for administrators, managers, and operators
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Bulk Operations: Ability to perform bulk operations on users, templates, and notifications
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API Management: Interface to manage API keys, webhooks, and external integrations
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Non-Functional Requirements
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Admin interface must load within 3 seconds
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Must support concurrent access by up to 50 administrators
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Interface must be responsive and mobile-friendly
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Must provide role-based security with audit logging
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Dashboard must refresh data in real-time or near real-time
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General System Requirements
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Security Requirements
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All user data must be encrypted at rest and in transit
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API endpoints must be secured with authentication and authorization
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System must support SSO integration (SAML, OAuth)
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Regular security audits and vulnerability assessments
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GDPR and privacy regulation compliance
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Performance Requirements
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System must support 1 million active users
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99.9% system uptime requirement
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Database queries must execute within 2 seconds
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API response times must be under 500ms for 95% of requests
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Integration Requirements
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RESTful API for external system integration
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Webhook support for real-time event notifications
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Support for popular third-party services (CRM, marketing automation tools)
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Standard data import/export capabilities
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Scalability Requirements
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System must be horizontally scalable
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Support for cloud deployment (AWS, Azure, GCP)
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Auto-scaling capabilities based on load
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Database clustering and load balancing support
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