Predictive Routing 429 Errors During High-Volume API Polling

Our AppFoundry integration is hitting 429 Too Many Requests errors when polling /api/v2/analytics/predictiverouting for real-time queue metrics. The client-side exponential backoff helps but causes stale data during peak hours. Has anyone successfully implemented a WebSocket alternative for live routing stats, or is there a higher tier rate limit available for partners? Current SDK version is 2.1.4.