Why does this setting in the Architect flow cause immediate WebSocket drops when simulating 500 concurrent WhatsApp sessions? I am running a JMeter script to validate the Genesys Cloud messaging throughput. The test hits the /v2/conversations/messaging endpoint to inject messages at a rate of 10 requests per second per virtual user. After 30 seconds, the Performance API shows a spike in active_conversations, but the client-side WebSocket connections drop with a 1006 error code. The logs show no server-side 5xx errors, just the abrupt closure. I checked the WebSocket connection limits in the admin portal, and they seem standard for our tier. The JMeter config uses a constant throughput timer and keeps-alive enabled. Is there a specific timeout or buffer setting I am missing? The documentation mentions rate limits, but this feels like a connection handling issue rather than a simple 429 throttling response. The environment is a standard US-East instance. Any insights on how to tune the flow or API calls for higher sustained concurrency would be helpful. I want to ensure the platform can handle our projected peak load without dropping digital channels. Thanks for the help.
It depends, but generally…
The issue stems from the WebSocket heartbeat timeout configuration in the messaging bridge. When concurrency spikes, the server struggles to maintain the ping-pong cycle for all 500 sessions.
Check the keep_alive_interval setting in your bridge configuration. Increasing this value by 50% often stabilizes the connection under heavy load. Ensure your load test includes proper pong responses to match the new interval.