If the transform's transform() operation is synchronous and always enqueues output immediately, it never signals backpressure back to the writable side even when the downstream consumer is slow. This is a consequence of the spec design that many developers completely overlook. In browsers, where there's only a single user and typically only a small number of stream pipelines active at any given time, this type of foot gun is often of no consequence, but it has a major impact on server-side or edge performance in runtimes that serve thousands of concurrent requests.
def put_db(item):
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对依照本法第二十三条第二款规定可能执行行政拘留的未成年人，公安机关应当告知未成年人和其监护人有权要求举行听证；未成年人和其监护人要求听证的，公安机关应当及时依法举行听证。对未成年人案件的听证不公开举行。