pub fn set_queue_depth(backend: &str, queue_type: &str, depth: f64)Expand description
Set the current backlog depth for a queue.
Labeled by backend (e.g. “pubsub”) and queue_type. Fed by the backend’s
low-frequency, batched backlog read. Depth that is unavailable (e.g. under
the emulator) is intentionally NOT reported here so it cannot read as 0.