solr attribute values
Feature stored="true" indexed="true" docValues="true" Purpose Fetch actual field in results Enables search/filtering Enables sorting, faceting, grouping Access style Row-based Inverted index (term → docs) Columnar (doc → value) Memory efficient? No (for many fields) Moderate Yes (when used correctly) Fast filtering? ❌ ✅ ✅ (especially for large sets) Fast faceting? ❌ ❌ (classic facet is slow) ✅ (modern JSON Facets) Tree DB Example ogr_geometry_wkt : yes (needed in query results) species : yes (to show in search hits) species : yes (to allow text search) meanht : yes (to filter trees by height) ...