Messaging Flow Fails at High Concurrency with 429

General Discussion
1

My configuration keeps failing… When pushing 50 concurrent WebSocket connections through JMeter, the Architect flow stops responding to inbound messages after 10 seconds. The API returns this error repeatedly:

429 Too Many Requests: Rate limit exceeded for messaging interactions.

I have verified the rate limits in the admin console, but the threshold seems lower than the documented 60 requests per second for my tier. Is there a specific header or flow action causing this early cutoff?

2

The way I solve this is by checking the underlying SIP trunk region alignment, as mismatched endpoints often cause silent 500 errors during media server handoff.

  • Ensure the SIP trunk region matches the recording storage endpoint
  • Verify outbound routing logic isn’t triggering carrier-specific failover quirks
  • Isolate the metric definition before pushing the full terraform plan to avoid backend validation timeouts