For rate-limiting use cases, we’ve introduced a more performant and less restrictive Flow Control feature for the Publish API.We are planning to deprecate setting parallelism greater than 1 for the Queue API in future. If you’re currently using Queue API with parallelism greater than 1 for rate limiting, consider using Flow Control.Queues with parallelism set to 1 provide FIFO guarantees, which remains a valid use case for the Queue API.