A payment is an event, not just a click.
A browser redirect is useful feedback for a person. Your server needs its own trustworthy record of the outcome.
✳
Verify on the server
A production integration should validate provider signatures and retrieve an authoritative payment status before fulfilment.
Expect a repeat
Event delivery may happen more than once. Use an event identifier and idempotent processing to avoid duplicate actions.
Plan for recovery
Store processing outcomes, retry failures safely, and reconcile missed events. The SlinePay API examples are proposed contracts, not live endpoints.
Written for the SlinePay product concept. General design guidance; no live product or performance claims.
More from the journal