RediSearch 2.10 release notes

New vector data types. Enhanced indexing capabilities. Simplified query syntax. Expanded geospatial search.

Requirements

RediSearch v2.10.5 requires:

• Minimum Redis compatibility version (database): 7.4
• Minimum Redis Enterprise Software version (cluster): 7.6 (TBD)

v2.10 GA (v2.10.5) (July 2024)

This is the General Availability release of RediSearch 2.10

Headlines:

This latest RediSearch introduces memory-efficient vector data types, enhanced indexing capabilities with support for empty and missing fields, simplified query syntax, and expanded geospatial search features.

What's new in 2.10.5

This new major version introduces new BFLOAT16 and FLOAT16 vector data types, reducing memory consumed by vectors while preserving accuracy. This update also includes highly-requested support for indexing empty and missing values and enhances the developer experience for queries with exact matching capabilities. Developers can now match TAG fields without needing to escape special characters, making the onboarding process and use of the query syntax easier. Lastly, Geospatial search capabilities have been expanded with new INTERSECT and DISJOINT operators, and ergonomics have been improved by providing better reporting of the memory consumed by the index and exposing the full-text scoring in an aggregation pipeline.

Features:

• Enhancing exact matching queries with TAG avoiding escaping special meaning characters using the simpler syntax '@tag:{"my-query%term"}' and NUMERIC queries:

  • #4802 - Using double quotes to wrap exact matching query terms such as @email:{"test@redis.com"} in DIALECT 2 ( MOD-7299)
  • #4676, #4433 - Enhancing query parser to avoid unnecessary escaping (MOD-5756)
  • #4527 - Enhancing exact matching queries for NUMERIC using single value FT.SEARCH idx @numeric:[3456] (MOD-6623)
  • #4802 - Enabling support for single operators in NUMERIC queries such as equivalence ==, difference !=, greater than > and >= and less than < and <= as in FT.SEARCH idx '@numeric==3456' (MOD-6749)

• Adding new keywords to support indexing empty values using INDEXEMPTY and missing values using INDEXMISSING per field in the SCHEMA while defining the index with FT.CREATE

  • #4663, #4721 - Indexing empty strings values "" for TAG and TEXT fields (MOD-6540, MOD-7200)
  • #4721 - Updating the query parser to support empty value queries for TEXT as FT.SEARCH idx '@text_field:""'or FT.SEARCH idx '""' and for TAG as in FT.SEARCH idx '@tag_field:{""}' (MOD-7200)
  • #4720, #4635 - Indexing missing values for all field types introducing the query syntax function ismissing(@field) enabling query for missing fields as in FT.SEARCH idx 'ismissing(@text)' (MOD-6532)

• Enabling new vector data types reducing memory consumed by vectors with the new BFLOAT16 and FLOAT16

  • #4674 - Adding support BFLOAT16 and FLOAT16 in the vector index definition (MOD-6765, MOD-6776)

• Exposing the full-text score values during the aggregation pipeline using ADDSCORE. When calling the scores you can use @__score in the pipeline as in FT.AGGREGATE idx 'hello' ADDSCORES SORTBY 2 @__score DESC

  • #4859 - Expose scores to FT.AGGREGATE pipeline (MOD-7190)

• #4227 - Adding support for new operators INTERSECT and DISJOINT when querying for GEOSHAPE polygons (MOD-6178)

Bug fixes (since 2.10.4):

• #4854 - Avoid expansion on stemming from numeric values (MOD-7025)

Improvements (since 2.10.4):

• #4865 - Add coverage for cleaning garbage entries when indexing missing fields (MOD-7415)