Announcing IN query operator

Vespa has introduced a new IN query operator designed to enhance the efficiency and simplicity of filtering documents by matching fields against a set of values, replacing the need for multiple OR conditions. This operator is optimized for both singlevalue and multivalue fields with basic types such as byte, int, long, or string, and offers significantly improved performance over the previously used weightedSet operator. Performance tests demonstrated that the IN operator provides substantial latency reductions, especially when dealing with a large number of values, achieving up to a 12.5x speedup in some scenarios. This enhancement is available in Vespa version 8.293.15, and those interested can find further details in the reference documentation and join the Vespa community for more insights.

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