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Give Spark a 45x speed boost with Redis
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When Redis and Spark are used together, data processing (for the analysis of time series data described below) proved 45 times faster than Spark alone using either process memory or an off-heap cache to store the data -- not 45 percent faster, but 45 times faster!
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将数据成功迁移到云端的三个技巧
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首先，要尽早意识到数据量的大小 第二，不要非得用和原来一样的数据库 最后，安全和稳定对所有系统来说都是至关重要的
