Payment gateways and identity providers
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
integrate payment and identity providers with correct failure handling and reconciliation.
Planned topics
- Payments: use idempotency keys, handle timeouts as "unknown" states, process provider webhooks, and verify signatures.
- Reconciliation: compare gateway settlement, platform payments, and ERP postings regularly; investigate differences.
- Identity providers: federation, token validation, session handling, and a plan for provider outage (cached keys, limited offline sessions).
- Always define behavior when the other side is down and who is told.
Draft outline details
Demonstration
a payment state diagram: initiated, pending, authorized, captured, failed, unknown; "unknown" resolved by querying the provider.
Check your understanding
A payment call times out. What state is it in?
Show answer
Unknown. Query the provider with the idempotency key before retrying or cancelling.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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