Recommended Patterns and Practices

This guide provides actionable patterns for building robust, secure, and reliable integrations with the PayAlo Merchant Gateway. Following these recommendations will reduce common integration mistakes and ensure your integration handles edge cases gracefully.

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Sections

Section	Description
Authentication & Security	Secure key storage, rotation, TLS enforcement, and callback verification
Transaction Handling	Idempotency keys, asynchronous flow design, and webhooks vs polling
Error Handling & Resilience	Retry strategies, exponential backoff, timeout handling, and error classification
Webhook / Callback Best Practices	Prompt responses, idempotent handlers, and authenticity verification
Reconciliation	Periodic reconciliation, discrepancy handling, and gateway as source of truth
Performance & Rate Limiting	Rate limit respect, connection pooling, and batching strategies
Anti-Patterns to Avoid	Common mistakes, their consequences, and what to do instead