Query

• HTTP interface with configurable response formats (XML/XSLT, JSON, Python, Ruby, PHP, Velocity, binary)
• Sort by any number of fields, and by complex functions of numeric fields
• Advanced DisMax query parser for high relevancy results from user-entered queries
• Highlighted context snippets
• Faceted Searching based on unique field values, explicit queries, date ranges, and numeric ranges
• Multi-Select Faceting by tagging and selectively excluding filters
• Spelling suggestions for user queries
• More Like This suggestions for given document
• Function Query - influence the score by user specified complex functions of numeric fields or query relevancy scores.
• Range filter over Function Query results
• Date Math - specify dates relative to "NOW" in queries and updates
• Dynamic search results clustering using Carrot2
• Numeric field statistics such as min, max, average, standard deviation
• Combine queries derived from different syntaxes
• Auto-suggest functionality for completing user queries
• Allow configuration of top results for a query, overriding normal scoring and sorting
• Performance Optimizations