sorting performance

Lucene/Solr background Lucene has a segmented architecture – when a small amount of documents are added to an existing index, this will often just add an additional small segment to the index. Caching data structures at the segment level (e.g. field values used for sorting) is often desirable so that […]

Off-Heap FieldCache Faceting and Sorting

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