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1 ?导向性民意调查 Push polling（导向性民意调查）,新概念英语，英语作文，大学英语，留学英语，四六级考试，TOEFL托福，IELTS雅思，研考英语，英语口语,录取分数线，中考，高考,大...
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Long Polling: Also known as Asynchronous Polling, this method is a hybrid of pure server push and client pull. 长时间轮询：也就是所谓的异步轮询，这种方式是纯服务器端推送方式和客户端拉取方式的混合。 - 2
In this article, I discussed various approaches for simulating a server push, ranging from pure polling to a real-time server push, and noted the strengths and weaknesses of each approach. 这篇文章讨论了几种模拟服务器推送的方法，从纯轮询到实时服务器推送，文中说明了每种方法的优缺点。
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