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Architecture Patterns

Payment Orchestration

Route payments to multiple providers based on:

Merchant preference
Provider availability
Cost optimization
Geographic coverage

Idempotency

Prevent duplicate charges using:

Idempotency keys
Request caching
Duplicate detection
Safe retries

Event-Driven Architecture

Use events for:

Webhook processing
Async notifications
Audit logging
Analytics

Circuit Breaker

Handle provider failures:

Monitor provider health
Fail fast
Fall back to alternative
Alert on failures

Document Version: 1.0
Last Updated: June 2026