Queries per second

{{Short description|Measure of search traffic an information retrieval system receives}}

{{distinguish-redirect|Query rate|Query throughput}}

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Queries per second (QPS) is a measure of the amount of search traffic an information-retrieval system, such as a search engine or a database, receives in one second.[http://www.microsoft.com/enterprisesearch/en/us/search-glossary.aspx#Q Microsoft's search glossary] The term is used more broadly for any request–response system, where it can more correctly be called requests per second (RPS).

High-traffic systems must be mindful of QPS to know when to scale to handle greater load.