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A practical checklist for payment gateway integration in Laravel
Payment integration feels fast on day-one demos and painful on the first refund or delayed notification. From production gateway and POS work, this checklist saves weeks.
Before code: define use cases (one-off pay, subscription, partial refund, network failure). Document edge cases with operations. Then design a payments table with explicit states: initiated, authorized, captured, failed, refunded.
In Laravel: use queue jobs for async processing and store each webhook event_id for idempotency. Never update order state from a callback without signature verification. Keep the webhook endpoint thin—verify, dispatch job, return 200.
Reconciliation is not optional: compare gateway reports with your database daily. Small mismatches compound at scale. Finally, monitor failure rates by payment method and device; often the issue is 3DS or session expiry, not your business logic.
A trustworthy product means users understand what happened to their money. Clear states and messaging beat button styling every time.
Before code: define use cases (one-off pay, subscription, partial refund, network failure). Document edge cases with operations. Then design a payments table with explicit states: initiated, authorized, captured, failed, refunded.
In Laravel: use queue jobs for async processing and store each webhook event_id for idempotency. Never update order state from a callback without signature verification. Keep the webhook endpoint thin—verify, dispatch job, return 200.
Reconciliation is not optional: compare gateway reports with your database daily. Small mismatches compound at scale. Finally, monitor failure rates by payment method and device; often the issue is 3DS or session expiry, not your business logic.
A trustworthy product means users understand what happened to their money. Clear states and messaging beat button styling every time.