Power of Two Random Choices! First paper was 1996 maybe, but here's a latter survey,
https://www.recurse.com/blog/57-paper-of-the-week-the-power-of-two-random-choices-a-survey-of-techniques-and-results
https://www.recurse.com/blog/57-paper-of-the-week-the-power-of-two-random-choices-a-survey-of-techniques-and-results
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https://github.com/facebookincubator/katran