The Cortex Session Management API is a critical component of the Sophra System, providing robust and scalable session handling capabilities for the Cortex module. This API leverages Next.js 14’s API routes to offer a RESTful interface for creating, retrieving, and managing user sessions. It integrates seamlessly with Sophra’s microservices architecture, utilizing the service manager for dependency injection and interacting with various core services such as the session service, caching layer, and metrics collection.

Architecturally, this component is designed with a focus on performance and reliability. It employs a multi-tiered approach to session management, utilizing both a primary database (likely PostgreSQL, given the Prisma ORM usage in the broader system) and a Redis cache for rapid session retrieval. This design decision enables the system to handle high-volume session creation and retrieval operations with minimal latency, crucial for maintaining a responsive user experience in a large-scale application.

The API implements sophisticated error handling and logging mechanisms, leveraging the Winston logger for detailed error tracking and the metrics service for performance monitoring. This integration with Sophra’s observability stack allows for real-time insights into API performance and error rates, facilitating proactive system maintenance and optimization.

One of the unique features of this API is its ability to handle flexible session metadata, allowing clients to associate arbitrary data with each session. This capability, combined with the system’s caching strategy, enables complex user state management and personalization features throughout the Sophra ecosystem.

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Exported Components

interface Session {
  id: string;           // Unique identifier for the session
  userId: string | null; // Associated user ID, if authenticated
  startedAt: Date;      // Session start timestamp
  lastActiveAt: Date;   // Last activity timestamp
  createdAt: Date;      // Creation timestamp
  updatedAt: Date;      // Last update timestamp
  metadata: unknown;    // Flexible metadata storage
}

The POST and GET functions are Next.js API route handlers for creating and retrieving sessions, respectively.

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Implementation Examples

const response = await fetch('/api/cortex/sessions', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    userId: 'user123',
    metadata: { lastPage: '/dashboard' }
  })
});
const { data } = await response.json();
console.log('Created session:', data.sessionId);

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Sophra Integration Details

The Session Management API integrates with several core Sophra services:

  1. Session Service: Handles CRUD operations for sessions in the primary database.
  2. Cache Service: Manages session caching in Redis for fast retrieval.
  3. Metrics Service: Records performance metrics and error rates.

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Error Handling

The API implements comprehensive error handling:

All errors are logged using the Winston logger and tracked via the metrics service.

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Data Flow

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Performance Considerations

Caching Strategy

Sessions are cached in Redis immediately after creation, with a TTL of 30 minutes. This reduces database load for frequent session retrievals.

Metrics Collection

The API tracks session creation latency and error rates, allowing for performance optimization and early problem detection.

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Security Implementation

The API relies on Sophra’s global authentication middleware for request validation. It assumes that user authentication and authorization have been performed before reaching the session endpoints.

  • User IDs are validated to prevent injection attacks.
  • Session IDs are generated using cryptographically secure methods.
  • Metadata is sanitized to prevent XSS and injection vulnerabilities.

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Configuration

REDIS_URL=redis://localhost:6379
SESSION_TTL=1800 # 30 minutes in seconds

The Session Management API can be fine-tuned through environment variables and runtime configuration options to optimize performance and resource utilization based on specific deployment requirements.