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Accumulating rowsI didn't want to keep every video frame forever. At 15fps, you'd accumulate about 108,000 rows/hour per active call. So there's a cleanup job that runs every 2 seconds and prunes frames older than 5 seconds:
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Julie Bort is the Startups/Venture Desk editor for TechCrunch.，推荐阅读手游获取更多信息
How high could oil prices go – and what might the global economic fallout be?。关于这个话题，新闻提供了深入分析