solr

Related Pages Facet Functions Sub-Facets Multi-Select Faceting Nested Documents / Block Join Faceting Facet Performance Benchmarks Introduction Solr 5 has a completely re-written faceted search and analytics module with a structured JSON API to control the faceting and analytics commands. NOTE: Some examples use syntax only supported in later Solr […]

JSON Facet API

 in analytics / facets / json / solr / solr search  tagged facet aggregations / facet functions / facet statistics / Faceted Search / JSON facet API / JSON facets / nested aggregations / nested facets / query facet / range facet / solr aggregations / solr facet / solr facet example / subfacets / terms facet by (updated on )
Subfacets (also called Nested Facets) is a more generalized form of Solr’s current pivot faceting that allows adding additional facets for every bucket produced by a parent facet. Subfacet advantages over pivot faceting: Subfacets work with facet functions (statistics), enabling powerful real-time analytics Can add a subfacet to any facet […]

Solr Subfacets

 in analytics / facets / grouping / solr / solr search  tagged facet analytics / facet functions / facet statistics / JSON facets / nested aggregations / nested facets / pivot facets / solr facet / solr facet example / solr facets / sub-facets / subfacets by (updated on )
Traditional faceted search (also called guided navigation) involves counting search results that belong to categories (also called facet constraints). The new facet functions in Solr extends normal faceting by allowing additional aggregations on document fields themselves. Combined with the new Sub-facet feature, this provides powerful new realtime analytics capabilities. Also […]

Solr Facet Functions and Analytics

 in analytics / facets / grouping / solr  tagged count distinct / facet analytics / facet by function / facet statistics / Faceted Search / histogram facet / hyperloglog solr / JSON facets / realtime analytics / solr analytics / solr facet / solr facet example / solr facets / solr hll / solr statistics by (updated on )
Solr 5.1 has been released! Here’s an overview of how to use some of the new features. Also see Solr download links and upcoming features of the next Solr release. New Facet Module The new facet module has a native JSON Facet API, first-class support for statistics and analytics via […]

Solr 5.1 Features

 in analytics / facets / json / query / solr / solr cloud / solr search  tagged json facet / JSON request / pivot facets / solr 5 / solr 5.1 / solr features / solr query / solr search by (updated on )
Here’s an overview of some of the new features in Solr 5.2 Also see Solr download links and upcoming features of the next Solr release. Solr caches can be limited by memory use Caches using the LRUCache implementation can specify a new parameter maxRamMB that will evict based on RAM […]

Solr 5.2 Features

 in solr / solr search  tagged backup index / cache memory / excludeTags / filter exclusions / hyperloglog / multi-select faceting / range facet mincount / restore index / solr 5 / solr 5.2 / solr expressions by (updated on )
The percentile aggregation function was just added to the new Solr Facet Module. This allows one to calculate one or more percentiles for each facet bucket (i.e. each group of documents produced by faceting), and even sort facet buckets by any given percentile. The percentile aggregation even works with distributed […]

Percentiles for Solr Faceting

 in analytics / facets / json / query / solr  tagged distributed percentiles / facet example / facet sort / percentile aggregation / percentile facet example / percentile facets / percentile sort / pivot facet percentiles / solr t-digest 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 )
Native code faceting for Solr has just been added to Heliosearch, and benchmarks show an impressive 2x performance increase! This is faceting code written in C++ and statically compiled for maximum performance, and loaded into the JVM via JNI (Java Native Interface). nCache, Heliosearch’s off-heap version of the Lucene/Solr FieldCache, […]

Native Code Faceting

 in facets / heliosearch / native code / off-heap data / performance / solr  tagged clang vs gcc / Faceted Search / faceting performance / llvm vs gcc / native code / native code faceting / solr faceting / solr facets / solr jni by (updated on )
Solr needs a flexible cross-datacenter architecture that can handle both a variety of application needs as well as a variety of infrastructure resources. Design Goals Accommodate 2 or more data centers Accommodate active/active uses Accommodate limited band-with cross-datacenter connections Minimize coupling between peer clusters to increase reliability Support both full […]

Solr Cross Data Center Replication

 in solr / solr cloud  tagged cross data center / cross datacenter / cross datacenter indexing / data center replication / solr data center / solr eventual consistency / solr vector clocks / solrcloud data center by (updated on )