Query performance

From semantic-mediawiki.org

Settings that influence query features and performance implications.

 Has description
Con­figu­ration para­meter "$smwg­Query­Result­Non­Embedded­Cache­Lifetime"Sets the cache lifetime of non-embedded queries and their results fetched from the query engine
Con­figu­ration para­meter "$smwgExperimentalFeatures"Sets experimental features
Con­figu­ration para­meter "$smwgFixedProperties"Sets user defined properties to have a dedicated database table for them
Con­figu­ration para­meter "$smwgQConceptFeatures"Defines which concept features should be available by default.
Con­figu­ration para­meter "$smwgQEnabled"Activates or deactivates all query related features and interfaces
Con­figu­ration para­meter "$smwgQFeatures"Defines which query features should be available by default.
Con­figu­ration para­meter "$smwgQFilterDuplicates"Sets whether duplicate query conditions should be removed from computing query results
Con­figu­ration para­meter "$smwgQueryResultCacheLifetime"Sets the cache lifetime of embedded queries and their results fetched from the query engine
Con­figu­ration para­meter "$smwgQueryResultCacheRefreshOnPurge"Sets whether it is possible to manually refresh the query cache by doing a "purge" action
Con­figu­ration para­meter "$smwgQueryResultCacheType"Sets whether the query result cache may be used
Con­figu­ration para­meter "$smwgSparqlQFeatures"Sets the SPARQL query features that are expected to be supported by the repository of the identifier (graph) of the SPARQL database
Con­figu­ration para­meter "$smwgValueLookupCacheLifetime"Sets the cache lifetime of the value lookup cache until it is being invalidated
Con­figu­ration para­meter "$smwgValueLookupCacheType"Sets a separate cache type for the object cache when requesting value lookups from the database
Con­figu­ration para­meter "$smwgValueLookupFeatures"Sets which value lookup features should be served from value lookup cache

See also[edit]