Package =TWiki::Store::QueryAlgorithms::BruteForce

Default brute-force query algorithm

Has some basic optimisation: it hoists regular expressions out of the query to use with grep, so we can narrow down the set of topics that we have to evaluate the query on.

Not sure exactly where the breakpoint is between the costs of hoisting and the advantages of hoisting. Benchmarks suggest that it's around 6 topics, though this may vary depending on disk speed and memory size. It also depends on the complexity of the query.

Topic revision: r1 - 2008-01-22 - TWikiContributor
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright &© 1999-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback
Note: Please contribute updates to this topic on TWiki.org at TWiki:TWiki.TWikiStoreQueryAlgorithmsBruteForceDotPm.