Each vhost used to run its own sequential reachability probe. The role now queues the vhost and deferred_probe.yml checks the whole queue with one uri_probe_batch call after the shared-service preload and after the server roles. A vhost answering like a stale config restarts OpenResty once; one still unserved afterwards fails the deploy by name. uri_probe_batch takes follow_redirects explicitly so the probe sees the redirect status itself.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
uri_retry looped over each card slug, 60 to 64 s per probe on echoserver. The new uri_probe_batch module asks all URLs through a thread pool with per-URL retries and fails listing every URL that gave no expected status.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>