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Traffic Flow

Documentation about the general concepts and flow of traffic throughout the applications.

Payment flow​

Payment intent creation (server-to-server)​

  1. Product backend communicates with billing backend, which creates a PaymentIntent entry in database.
  2. Billing backend creates the payment_intent_id and sends back the checkout_token.
  3. Product redirects to the checkout URL

User checkout (frontend)​

  1. The User is redirected to Billing frontend (Next.js), where the token is validated, checkout page loads payment intent details from database.
  2. Billing backend creates payment provider specific intent, frontend redirects user to the provider payment page

Payment confirmation​

  1. Payment provider to Billing backend (webhook): verifying the status of the transaction. Billing backend updates the status based on that.
  2. Billing backend sends request to the given product, with the status of the transaction.

Full Flow​

Data Flow​

Payment Creation Flow​

Webhook Processing Flow​