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      <title>Python asyncio.Queue 實戰：背壓、Graceful Shutdown 與不丟資料測試</title>
      <link>https://dailypypy.org/learn/python-asyncio-queue-backpressure/</link>
      <pubDate>Sun, 11 Oct 2026 12:07:00 +0800</pubDate>
      
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dedup note: This is a focused asyncio pipeline follow-up to ../python-asyncio/, ../python-anyio/, ../rust-async-tokio/, and ../python-concurrent-futures/. Those posts cover async/await basics, structured cancellation, a short cross-language channel comparison, or Executor submission limits. This article instead centers bounded Queue backpressure, put-side throttling, the unfinished-task invariant behind task_done/join, Python 3.13+ Queue.shutdown, drain-first shutdown, cancellation-safe consumers, and deterministic no-loss tests.
source check: Reviewed against the official Python 3.14 asyncio queue and task documentation on 2026-10-11. Queue.shutdown and QueueShutDown require Python 3.13 or newer; examples were checked with Python 3.14.3.
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