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By wjgilmore
Submitted: Mar 27 2014 / 10:06

Many applications require the retrieval of random database records (for instance to highlight a random product in an online store). There are several ways to accomplish this task, but efficiency varies widely and becomes more pronounced as your database grows in size. This blog post demonstrates two common approaches when using Rails Active Record and MySQL, and benchmarks both (using the Ruby Benchmark module) to demonstrate their efficiency.
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