Best Practices

API Integration

Authentication

1. Token Management

   • Store tokens securely
   • Implement token refresh
   • Use environment variables
   • Rotate credentials regularly

2. Request Headers

   const headers = {
     'Authorization': `Bearer ${token}`,
     'Content-Type': 'application/json',
     'Accept': 'application/json'
   };

Error Handling

1. Implement Retry Logic

async function withRetry(fn: Function, maxRetries = 3) {
  let lastError;
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      lastError = error;
      if (!isRetryableError(error)) throw error;
      await delay(Math.pow(2, i) * 1000);
    }
  }
  throw lastError;
}

2. Handle Rate Limits

function handleRateLimit(response) {
  if (response.headers['x-ratelimit-remaining'] === '0') {
    const resetTime = response.headers['x-ratelimit-reset'];
    return delay(calculateWaitTime(resetTime));
  }
}

Security

Data Protection

1. Sensitive Data Handling

   • Encrypt data in transit
   • Minimize data exposure
   • Implement data masking
   • Regular security audits

2. File Upload Security

   • Validate file types
   • Scan for malware
   • Limit file sizes
   • Use secure storage

Access Control

1. API Keys

   • Rotate regularly
   • Environment-specific keys
   • Monitor usage
   • Revoke compromised keys

2. IP Whitelisting

   const allowedIPs = [
     '192.168.1.1',
     '10.0.0.1'
   ];

Performance

Optimization

1. Batch Operations

   • Use bulk endpoints
   • Implement pagination
   • Optimize payload size
   • Cache responses

2. Connection Management

const agent = new https.Agent({
  keepAlive: true,
  maxSockets: 100,
  maxFreeSockets: 10,
  timeout: 60000
});

Monitoring

1. Health Checks

async function checkHealth() {
  const response = await fetch('/health');
  return response.status === 200;
}

2. Performance Metrics
   • Response times
   • Error rates
   • Request volumes
   • Resource usage

Document Processing

Image Quality

1. Upload Guidelines

   • Minimum resolution: 300 DPI
   • Maximum file size: 10MB
   • Supported formats: JPG, PNG
   • Clear, unobstructed views

2. Validation

function validateImage(file) {
  const validTypes = ['image/jpeg', 'image/png'];
  const maxSize = 10 * 1024 * 1024; // 10MB
  
  return (
    validTypes.includes(file.type) &&
    file.size <= maxSize
  );
}

Webhook Integration

Webhook Handler

Authenticate first, acknowledge second, process last. Azakaw retries any non-2xx response, so a handler that does its work before replying risks being retried while still busy.

async function handleWebhook(req, res) {
  // 1. Authenticate. See Webhooks → Authentication Types for the method your webhook uses.
  if (!isAuthentic(req)) {
    return res.status(401).send('Unauthorized');
  }

  // 2. Acknowledge immediately.
  res.status(200).send('Accepted');

  // 3. Process out of band.
  await enqueueWebhookEvent(req.body);
}

Best Practices

• Authenticate every request. Prefer HMAC signatures — the secret never crosses the network, and the signed timestamp blocks replay. API key and Basic send a static credential on every delivery, so treat the endpoint URL as sensitive if you use them.
• Verify against the raw body. Re-serializing parsed JSON changes key order and whitespace, and the signature will never match.
• Only register https:// endpoints.
• Respond 2xx quickly, then process asynchronously.
• Be idempotent. Retries mean the same event can arrive more than once — de-duplicate on the event identifiers, for example SubmissionId together with Type.
• Never echo the payload into a response body or an unprotected log; it carries customer KYC data.

Testing

Integration Tests

1. Environment Setup

const config = {
  sandbox: {
    baseUrl: 'https://sandbox.azakaw.com',
    apiKey: process.env.SANDBOX_API_KEY
  }
};

2. Test Cases
   • Happy path scenarios
   • Error conditions
   • Edge cases
   • Performance tests

Compliance

Data Handling

1. PII Management

   • Encrypt sensitive data
   • Implement data retention
   • Access controls
   • Audit logging

2. Compliance Checks

function validateComplianceRequirements(data) {
  return {
    hasPII: checkForPII(data),
    isEncrypted: checkEncryption(data),
    hasRetentionPolicy: checkRetentionPolicy(data)
  };
}

Development Workflow

Version Control

1. Branch Strategy

   • Feature branches
   • Environment branches
   • Version tagging
   • Change documentation

2. Code Review

   • Security review
   • Performance review
   • Documentation review
   • Test coverage

Deployment

1. Environment Management

   • Development pipeline
   • Staging validation
   • Production deployment
   • Rollback procedures

2. Monitoring

   • Performance metrics
   • Error tracking
   • Usage analytics
   • Health monitoring