Ran into a weird issue today with our Premium App integration when handling large spikes in digital messaging volume. We are observing consistent 429 Too Many Requests errors on the POST /api/v2/conversations/messaging/participants endpoint specifically when our bot logic triggers a rapid handoff to a human agent.
Context:
Our application is deployed in the us-east-1 region and utilizes multi-org OAuth tokens for authentication. The issue manifests during peak hours (typically 10 AM - 2 PM PST) when concurrent session counts exceed 500. We have implemented exponential backoff with jitter, as recommended in previous discussions, but the retry window is frequently exceeded before the rate limit resets. The Retry-After header suggests a delay that is often longer than our configured timeout, causing the conversation state to become inconsistent on the client side.
Question:
Is there a specific rate limit configuration or header optimization for high-concurrency messaging handoffs that we are missing? We are currently using the standard REST API without a dedicated queue, and the latency seems to be compounding the throttling issue. Any insights into how to structure these requests to avoid hitting the edge node limits would be appreciated.