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How does financial API current limiting protection adapt to different business scenarios?

Created on 2025-07-09 15:32:22
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Financial API rate limiting protection adapts to different business scenarios by dynamically adjusting request thresholds based on factors like user tier, transaction volume, and risk levels. Here’s how it works across scenarios, with examples and Tencent Cloud recommendations:

  1. Retail Banking (High Volume, Low Risk)

    • Scenario: A bank’s mobile app allows users to check balances (low-risk) but limits fund transfers (higher risk).
    • Adaptation: Rate limits are higher for read-only APIs (e.g., 1,000 requests/minute/user) but stricter for write operations (e.g., 50 requests/minute/user).
    • Tencent Cloud Service: Use API Gateway with custom throttling rules and Tencent Cloud CLS for logging to monitor usage patterns.

  2. Payment Processing (High Sensitivity)

    • Scenario: A payment gateway must prevent fraud by limiting repeated transactions from the same IP or card.
    • Adaptation: Implement real-time rate limits (e.g., 5 transactions/minute/IP) and block suspicious spikes.
    • Tencent Cloud Service: Combine API Gateway with Tencent Cloud Anti-DDoS and Tencent Cloud CAM for IP-based access control.

  3. Investment Platforms (User Tier-Based Limits)

    • Scenario: Premium users get higher API quotas (e.g., 10,000 requests/hour) vs. free users (1,000 requests/hour).
    • Adaptation: Tiered throttling based on user roles stored in Tencent Cloud CAM.
    • Tencent Cloud Service: Use API Gateway with CAM-integrated policies and Tencent Cloud Redis for caching user tier data.

  4. Market Data Feeds (Burst Handling)

    • Scenario: A stock market API needs to handle sudden demand during earnings reports.
    • Adaptation: Temporary burst allowances (e.g., 5x normal limit for 5 minutes) via Tencent Cloud API Gateway’s elastic throttling.

  5. Fraud Detection (Adaptive Limits)

    • Scenario: If a user’s transaction pattern changes (e.g., sudden large withdrawals), reduce their rate limit dynamically.
    • Adaptation: Integrate Tencent Cloud TSI (Threat Intelligence) to adjust limits in real time based on risk scores.

Key Tools:

  • Tencent Cloud API Gateway: Centralized throttling, quota management, and logging.
  • Tencent Cloud CLS: Audit logs for compliance.
  • Tencent Cloud CAM: Role-based access control for tiered limits.
  • Tencent Cloud Redis: Caching user-specific rate limit states for low-latency enforcement.