Current limiting protection in financial APIs varies based on the API's purpose, sensitivity, and regulatory requirements. Here’s a breakdown of differences and examples:
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High-Frequency Trading (HFT) APIs:
- Strict rate limits (e.g., 100 requests per second) to prevent market manipulation and ensure fairness.
- Dynamic throttling adjusts limits based on market volatility.
- Example: An API for real-time stock quotes may enforce per-IP and per-user limits to prevent abuse.
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Payment Processing APIs:
- Lower transaction rates (e.g., 10 transactions per second) to mitigate fraud and ensure compliance with PCI-DSS.
- Token-based rate limiting ties limits to authenticated user sessions or API keys.
- Example: A payment gateway API may limit failed transaction attempts to prevent brute-force attacks.
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Banking APIs (e.g., account balance, transactions):
- Moderate rate limits (e.g., 50 requests per minute) to balance usability and security.
- Role-based limits: Admins may have higher limits than regular users.
- Example: A bank’s API might restrict balance checks to 10 requests per user per hour.
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Regulatory APIs (e.g., tax filings, compliance reports):
- Low, fixed limits (e.g., 5 requests per day) due to data sensitivity and legal constraints.
- Audit logging for all requests to ensure accountability.
- Example: A tax authority’s API may enforce strict limits to prevent unauthorized data scraping.
For scalable current limiting in financial APIs, Tencent Cloud API Gateway provides features like:
- Customizable rate limits (per IP, user, or API key).
- Dynamic throttling based on traffic patterns.
- Integration with Tencent Cloud’s security tools (e.g., WAF, CAM) for fraud detection and access control.