第一种就是较为熟悉的轮询方法。
由于响应可用性和轮询周期,轮询方法可能有延迟。
The polling method may have delays due to response availability and polling cycle.
回调方法比轮询方法更及时,能确保响应被及时处理。
This method is timelier than the polling method and guarantees that the response is handled immediately.
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