CMD Pro System Architecture
14.1. Architecture Overview Diagram
14.2. Component Descriptions
The Frontend Dashboard is the primary user-facing component of CMD Pro. It is responsible for rendering the complete market intelligence interface, including live price displays, interactive charts, and market tickers. The dashboard is designed to be highly responsive, ensuring optimal viewing across desktops, tablets, and mobile devices.
- Shortcode Integration:
[cmd_pro_dashboard]for easy embedding - Gutenberg Block: Native WordPress block editor component
- Widget Support: Configurable widget for sidebar or widgetized areas
- REST API Endpoints: Exposes data for custom integrations
- Responsive Design: Adapts to all screen sizes and devices
The API Manager is the central hub for all external data communication. It fetches commodity prices, exchange rates, and other market data from third-party providers, abstracts API complexity, handles authentication, manages rate limiting, and implements robust error handling.
- Data Fetcher: Handles HTTP requests via WordPress HTTP API
- Rate Limiter: Enforces API call limits to prevent throttling
- Fallback Handler: Switches to secondary sources on failure
- Data Validator: Validates incoming data against expected schemas
- Multiple Provider Support: Investing.com, Alpha Vantage, Polygon.io
The Cache Manager stores API responses, processed data, and rendered dashboard fragments to minimize redundant processing and external API calls. It includes intelligent invalidation strategies to ensure data freshness.
- Transient API: Time-based caching (default)
- Object Cache: Persistent storage via Redis/Memcached
- Cache Invalidation: Auto-invalidates on data updates
- Cache Warmup: Proactively refreshes before expiration
- Configurable TTL: Per data type expiration settings
The Currency Manager is a core differentiator for CMD Pro, providing the essential localization feature of converting international commodity prices into Pakistani Rupees per Maund. It manages exchange rates, performs currency conversions, and stores historical rate data.
- Exchange Rate API: Fetches live PKR/USD rates
- Conversion Engine: Converts USD to PKR using current/historical rates
- Maund Conversion: 1 Maund = 37.324 kg = 82.28 lb
- Multi-Currency Support: Foundation for additional currencies
- Manual Rate Override: Administrators can set rates manually
The Database layer handles all data persistence for CMD Pro. It leverages WordPress’s database abstraction layer and follows best practices for security and performance, using a combination of core and custom tables.
- Custom Tables:
wp_cmdp_prices,wp_cmdp_history,wp_cmdp_alerts, etc. - Options API: Plugin configuration and settings
- Secure Queries:
$wpdb->prepare()for all operations - Indexing: Performance-optimized indexes
- Backup & Export: Tools for data backup and export
The Charts component transforms raw price data into beautiful, responsive charts with configurable time ranges. They are highly interactive, allowing users to hover for details, zoom in, and toggle between data series.
- Chart.js Integration: Modern charting library
- Time Range Filters: 7D, 30D, 90D, 1Y, custom ranges
- Data Series Toggle: USD, PKR, and other metrics
- Interactive Features: Tooltips, click events, zoom
- Multiple Chart Types: Line, area, candlestick, bar
The Ticker component provides a dynamic, scrolling price feed that displays live commodity prices in a professional financial ticker format, enhancing user experience with constant market visibility.
- Live Price Feed: Current prices for configured commodities
- Scrolling Display: Smooth, continuous scrolling
- Auto-Refresh: Configurable update intervals
- Price Alert Indicators: Color-coded changes (green/red)
- Commodity Selection: Users choose which commodities appear
- WebSocket Ready: Future real-time updates support
14.4. Technology Stack
| Category | Technology | Purpose |
|---|---|---|
| โ๏ธ Backend | ||
| Platform | WordPress 6.0+ | CMS framework and plugin architecture |
| Backend Language | PHP 7.4 โ 8.2 | Core plugin logic and server-side processing |
| Database | MySQL 5.7+, MariaDB 10.3+ | Data persistence and queries |
| Caching | WordPress Transients API, Redis (optional), Memcached (optional) | Performance optimization |
| ๐ฅ๏ธ Frontend | ||
| Frontend Language | JavaScript (ES6+), HTML5, CSS3 | Dashboard rendering and interactivity |
| Charting Library | Chart.js 4.x | Interactive chart rendering |
| CSS Framework | Bootstrap 5 / Custom CSS | Responsive, professional design |
| Data Fetching | WordPress HTTP API, cURL, fetch() | External API communication |
| ๐ DevOps | ||
| Version Control | Git / GitHub | Source code management and collaboration |
| Testing | PHPUnit, WP_UnitTestCase, Jest | Unit and integration testing |
| Build Tools | Webpack, NPM, Composer | Asset compilation and dependency management |
| Deployment | GitHub Actions, CI/CD | Automated testing and deployment |
| Monitoring | New Relic, Lighthouse, GTmetrix | Performance and error monitoring |
14.7. Security Architecture
| Security Layer | Implementation |
|---|---|
| Input Validation | All user and API inputs validated using WordPress sanitize_* functions |
| Output Escaping | All outputs escaped using esc_* functions to prevent XSS |
| CSRF Protection | WordPress nonces used for all admin forms |
| SQL Injection | All database queries use $wpdb->prepare() |
| Capability Checks | All admin functions check current_user_can() |
| Data Encryption | API keys and sensitive data encrypted before storage |
| Secure Communication | All external API calls use HTTPS |
| Error Handling | Error messages sanitized; no system details exposed |
| Audit Logging | All critical actions logged in wp_cmdp_logs |
| Security Compliance | โ OWASP โ WordPress Coding Standards โ HTTPS โ Nonce Protection |
| Security Score | โ โ โ โ โ |
14.8. Performance & Scalability
CMD Pro is engineered for high performance and scalability, ensuring fast response times and reliable operation even under heavy load. The following strategies and metrics define our performance standards:
| Metric | Target | Measurement |
|---|---|---|
| Dashboard Load Time | < 2 seconds | Lighthouse, GTmetrix |
| API Response Time (Cached) | < 100ms | New Relic, Postman |
| API Response Time (Uncached) | < 500ms | New Relic, Postman |
| Chart Render Time (1,000 points) | < 1 second | Custom measurement |
| Cache Hit Rate | โฅ 90% | Custom monitoring |
| Concurrent Users | โฅ 10 | K6, JMeter |
| Lighthouse Score (Desktop) | โฅ 90 | Lighthouse |
| Lighthouse Score (Mobile) | โฅ 80 | Lighthouse |
14.9. Deployment Pipeline
14.10. Version History
| Version | Date | Status | Description |
|---|---|---|---|
| 1.0 | Nov 2026 | โ Stable | Initial architecture โ Core modules defined |
| 1.1 | Jan 2027 | โ Stable | Database schema finalized; API Manager implemented |
| 1.2 | Mar 2027 | ๐ Beta | Dashboard and Charts modules completed |
| 1.3 | May 2027 | ๐ Beta | Alerts and Ticker modules integrated |
| 2.0 | Sep 2027 | ๐ Planned | Production-ready โ Full feature set, Performance optimization |
14.11. Future Roadmap
The architecture is designed for growth. The following modules are planned for future releases to expand CMD Pro’s capabilities: