Loyalty Card System Architecture

The loyalty card system is built on a flexible service architecture:

SMS Verification Flow:

• Optional SMS verification based on client configuration

• Session-based OTP storage for verification

• Resend capability for failed deliveries

• Configurable SMS gateway (console, external provider)

Caching Strategy:

• Loyalty points cached for 2 minutes per user

• Reduces load on external loyalty systems

• Automatic cache invalidation on updates