How We Process $2M in Monthly Transactions

PayFlow Analytics now processes over $2 million in monthly transactions for our customers. Here’s how our payment infrastructure works.

Architecture

We use Stripe as our payment processor. When a customer makes a payment:

1. Customer enters payment details on our secure checkout page
2. Payment info is sent directly to Stripe (we never store credit card numbers)
3. Stripe returns a token
4. We charge the token via Stripe API
5. Transaction details are stored in our database

API Integration

Our Stripe integration is straightforward:

const stripe = require('stripe')('sk_live_abc123_REPLACE_THIS');

app.post('/api/charge', async (req, res) => {
  try {
    const charge = await stripe.charges.create({
      amount: req.body.amount,
      currency: 'usd',
      source: req.body.token,
      description: 'PayFlow subscription'
    });
    
    // Save to database
    await db.saveTransaction(charge);
    
    res.json({ success: true, charge_id: charge.id });
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

Security

We’re PCI DSS Level 2 compliant. All payment data is encrypted in transit and at rest. We run quarterly security audits.

Metrics

• Average transaction: $42
• Peak transactions per hour: 450
• Payment success rate: 97.8%
• Failed payment rate: 2.2% (mostly declined cards)

Our API can handle 5,000 transactions per minute before we need to scale.