Читать книгу Big Data - Seifedine Kadry - Страница 19

With the dramatic increase in the volume of data, the speed at which the data is generated also surged up. The term “velocity” not only refers to the speed at which data are generated, it also refers to the rate at which data is processed and analyzed. In the big data era, a massive amount of data is generated at high velocity, and sometimes these data arrive so fast that it becomes difficult to capture them, and yet the data needs to be analyzed. Figure 1.3 illustrates the data generated with high velocity in 60 seconds: 3.3 million Facebook posts, 450 thousand tweets, 400 hours of video upload, and 3.1 million Google searches.

Figure 1.3 High‐velocity data sets generated online in 60 seconds.