A polled flag is cached in each instance and refreshed when its time ends. A pushed flag is cached for long, and a change message updates every instance at once. When you turn a flag off at 0:50, instances with a 5-minute cache run the feature in 149,950 replies. The limit is 3,000. Push passes.
A canary before the whole fleetTap to change the deployment method
Canary · 5% of requests fail for 15 seconds · 750 failed requests
Case 1
3 API instances check a flag for 3,000 requests/s. The flag store restarts for 20 s at 0:20. At 0:50 the flag goes off. Fewer than 3,000 replies may still run the feature.