Rate Limiting
Rate limiting is a control mechanism used by exchanges to restrict the number of requests or orders a user can submit within a specific timeframe. It is a fundamental tool for protecting system stability and preventing abuse.
By setting thresholds for API calls, exchanges ensure that no single user can overwhelm the matching engine. This is particularly important for managing the load during periods of extreme market activity.
Rate limiting helps prevent quote stuffing and other forms of resource-heavy behavior. It is a common practice in web services and is essential for maintaining the performance of financial platforms.
When a user exceeds their limit, the system rejects subsequent requests, often returning an error code. Effective rate limiting requires a balance between allowing legitimate high-frequency activity and blocking malicious or excessive traffic.
It is a critical aspect of system design and infrastructure protection. It ensures that the exchange remains accessible and fair for all participants.