DownloadLog.requestId

DownloadLog.requestId is the optional id of the request that triggered a download, taken from the X-Request-Id header on the download call. It lets an upstream product correlate a download audit row with its own request trace — for example tying a "user clicked download" event to the resulting fetch. It may be null when the caller supplies no request id. It mirrors the requestId recorded on render logs, giving a consistent correlation key across the service's two activity trails.