[LUCENE-7050] Improve the query cache heuristic to detect costly queries

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 6.0
• Lucene Fields: New
• Assignee: Adrien Grand
• Reporter: Adrien Grand
• Created: 26/Feb/16 17:07
• Updated: 28/Aug/22 14:50
• Resolved: 29/Feb/16 10:06

Description

Term queries, phrase queries and their combinations through boolean queries should not be cached too agressively since they can efficiently make use of skip lists. However we also have a number of queries that in practice need to visit all matches anyway like PrefixQuery, TermsQuery, PointInSetQuery, PointRangeQuery, so caching them more agressively can help avoid computing all documents that match in the whole index again and again.