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Doing a quick google search, there are claims of "6,000 tweets per second in 2020", or about 6 tweets per millisecond. The blog posts mentions there is an edge case for getting more than 16 tweets per millisecond.

Rather close margins assuming an exponentiation usage growth of Twitter. I wonder how long that variant is going to last.

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We left out some detail here to keep the post readable. In reality, we can handle 16 Tweets per millisecond per partition. We have tens of partitions, so that makes the edge case less likely. If we do see a gigantic growth in Tweet rate, we would need to increase the number of partitions anyways, so we decided this edge case was acceptable.

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