Starting November 19 2024, you will start to notice an APS (Actions per Second) rate limit associated with each Temporal Cloud Namespace in the UI, API, and tcld.

A Namespace’s default limit is set at 400 APS and automatically adjusts based on recent usage (over the prior 7 days). Your namespace may thus have a higher limit already either due to recent traffic, or if you previously requested and were granted an increase.

Going forward, you may get rate limited if your namespace’s throughput increases significantly over a short period of time. Do note that APS rate limiting only slows down execution of workflow tasks and doesn’t prevent the successful execution of your workflows.

Existing RPS rate limits will continue to apply because not all API calls are subject to APS rate limiting. The combination of APS and RPS rate limits ensures the smooth operation of customer workloads.