filters

What is the Facet Domain The domain of a facet is the set of values (normally defined by a set of documents) that calculations will be done over. The root domain is the set of documents that match the base query and any filters. Changing the Facet Domain For any […]

Facet Domains

 in analytics / facets / filters  tagged block child / block parent / blockChildren / blockParent / domain changes / excludeTags / facet domain / facet domains / facet filters by (updated on )
NOTE: This uses syntax from the upcoming Solr 5.4 release. If you are using Solr 5.2 or 5.3, specify domain:{excludeTags:mytag} as excludeTags:mytag. Multi-Select Faceting with Solr Multi-select faceting is a powerful faceting style that allows users to see and select multiple facet constraints (facet values) for certain facets. This example […]

Multi-Select Faceting

 in analytics / facets / filters / solr  tagged excludeTags / faceting example / filter exclusions / filter tag / filter tagging / ignoring facets / ignoring selected facets / multi-facet / multi-select faceting / multiselect faceting / single-select faceting by (updated on )
Solr 4.10 and Heliosearch .07 have added a terms query (or terms filter) to more efficiently match many terms in a single field. A large number of terms are often useful for things like access control lists or security filters. Previously, the only way to do this was a large […]

Solr Terms Query for matching many terms

 in filters / heliosearch / native code / off-heap data / performance / search / solr  tagged access control list / boolean query / id filter / matching many terms / security filter / solr terms / terms filter / terms qparser / terms query by (updated on )
The filter caching features in Solr allow for precise control over how filter queries are handled in order to maximize performance. Solr has the ability to specify if a filter is cached, specify the order filters are evaluated, and specify post filtering. Solr Filter Queries Adding a filter expressed as […]

Solr Filter Caching

 in filters / heliosearch / lucene / search / solr  tagged filter cache / filter query / function queries / geo search / post filter / solr filter / solr filter cache / solr geosearch / solr performance / solr spatial / spatial search by (updated on )
Heliosearch’s off-heap FieldCache was previously introduced and benchmarked for integer fields. Support for all numeric field types as well as string fields has now been completed, and this post will focus on the performance of string fields. A review of nCache (n is for “native”) features and goals: nCache has […]

Heliosearch/Solr Off-Heap FieldCache Performance

 in facets / filters / heliosearch / off-heap data / performance / solr  tagged off-heap data / off-heap FieldCache / solr sorting performance / sorting performance by (updated on )
Off-Heap Native Filters is the first feature we added to Heliosearch, a new open source project designed to bring Solr performance to the next level. Big JVM heaps can be Big Trouble JVMs have never been good at dealing with large heaps. Large heaps mean lots of garbage collection work, […]

Heliosearch/Solr Off-Heap Filters

 in filters / heliosearch / native code / performance / search / solr  tagged garbage collection / GC pauses / off-heap / off-heap filters / solr garbage collection by (updated on )