Rate limit by user or key

For stable and predictable API operation, it is important not only to scale, but also to control the number of requests. We implement a flexible rate limiting that allows you to set limits based on API keys, user IDs or IP addresses. This protects the system from abuse, overload and makes it possible to guarantee SLA to each client.


How rate limiting works

ApproachWhat controls
By API keyLimit on the number of requests from one integrator or application
By User IDIndividual limit per user (e.g. mobile app)
By IP AddressIP Spam or DDoS Protection
By endpoint/methodAbility to limit sensitive methods (e.g. search, write)

Settings and functions

Limit support: RPS, RPM, RPH (requests per second/minute/hour)

Sliding window, fixed window, token bucket and leaky bucket algorithms
  • 429 Code Return and Custom Error Message
  • Auto Timer Unlock
  • Metrics: number of exceedances, tokens on the edge of the limit, reset frequency

Business benefits

Protection against overloads and DoS attacks
  • Lower infrastructure costs
  • Quality control of customer integrations
  • Identification of abnormal activity and possible vulnerabilities
  • Ability to allocate VIP users with separate limits

Where especially important

API for financial transactions
  • Gaming platforms with frequent user activity
  • E-commerce services with high filtering and search rates
  • Public APIs and open platform solutions

Rate limiting is the control, safety and quality of the API. We implement point constraints that protect the infrastructure and ensure predictable operation under any load.

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