--- title: Faster shuffling in Go with batching – Daniel Lemire's blog description: Using batching techniques to generate random numbers can significantly speed up the shuffling of large data sets in Go, achieving performance improvements of... canonical: https://daily.dev/posts/faster-shuffling-in-go-with-batching-daniel-lemire-s-blog-ftw3bvuer twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Faster shuffling in Go with batching – Daniel Lemire's blog | daily.dev og:description: Using batching techniques to generate random numbers can significantly speed up the shuffling of large data sets in Go, achieving performance improvements of... og:url: https://daily.dev/posts/faster-shuffling-in-go-with-batching-daniel-lemire-s-blog-ftw3bvuer og:image: https://api.daily.dev/og/posts/FTw3BVUER.png og:image:alt: Faster shuffling in Go with batching – Daniel Lemire's blog og:image:width: 1200 og:image:height: 630 og:locale: en --- [Daniel Lemire](https://daily.dev/sources/lemire) [Read post](https://api.daily.dev/r/FTw3BVUER) # [Faster shuffling in Go with batching – Daniel Lemire's blog](https://api.daily.dev/r/FTw3BVUER "Go to post") Using batching techniques to generate random numbers can significantly speed up the shuffling of large data sets in Go, achieving performance improvements of over 2x compared to the standard rand.Shuffle method. This involves generating multiple random numbers from a single 64-bit value. Code examples and benchmarks are provided to illustrate these enhancements. [#performance](/tags/performance "Check all #performance posts")[#golang](/tags/golang "Check all #golang posts")[#algorithms](/tags/algorithms "Check all #algorithms posts") Apr 06, 2025•6m read time•From [lemire.me](https://api.daily.dev/r/FTw3BVUER "lemire.me") [](https://api.daily.dev/r/FTw3BVUER "Go to post") 35 Impressions Comment Bookmark Copy Share your thoughtsPost [](https://daily.dev/sources/lemire) [Daniel Lemire](https://daily.dev/sources/lemire "https://daily.dev/sources/lemire") Authored by Daniel Lemire, a computer science professor and researcher, this blog covers a wide rang... Read more 21 Followers • 127 Upvotes #### Would you recommend this post? 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