{ "schema_version": 2, "id": "develop/ai/search-and-query/advanced-concepts", "title": "Search concepts", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/", "summary": "Details about query syntax, aggregation, scoring, and other search and query options", "aliases": [ "/develop/interact/search-and-query/advanced-concepts", "/develop/interact/search-and-query/advanced-concepts/", "/interact/search-and-query/advanced-concepts/" ], "tags": [ "docs", "develop", "stack", "oss", "rs", "rc", "oss", "kubernetes", "clients" ], "last_updated": "2026-09-11T15:33:04+01:00", "children": [ { "id": "develop/ai/search-and-query/advanced-concepts/aggregations", "summary": "Groupings, projections, and aggregation functions", "title": "Aggregations", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/aggregations/" }, { "id": "develop/ai/search-and-query/advanced-concepts/aggregations-syntax", "summary": "Order of operations for the FT.AGGREGATE command", "title": "FT.AGGREGATE order of operations", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/aggregations-syntax/" }, { "id": "develop/ai/search-and-query/advanced-concepts/autocomplete", "summary": "Learn how to use the autocomplete feature of Redis for efficient prefix-based suggestion retrieval.", "title": "Autocomplete with Redis", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/autocomplete/" }, { "id": "develop/ai/search-and-query/advanced-concepts/escaping", "summary": "Controlling text tokenization and escaping", "title": "Tokenization", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/escaping/" }, { "id": "develop/ai/search-and-query/advanced-concepts/stopwords", "summary": "Stop words support", "title": "Stop words", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/stopwords/" }, { "id": "develop/ai/search-and-query/advanced-concepts/dialects", "summary": "Learn how to use query dialects", "title": "Query dialects", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/dialects/" }, { "id": "develop/ai/search-and-query/advanced-concepts/query_syntax", "summary": "Learn how to use query syntax", "title": "Query syntax", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/query_syntax/" }, { "id": "develop/ai/search-and-query/advanced-concepts/query_attributes", "summary": "Learn how to use query attributes", "title": "Query attributes", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/query_attributes/" }, { "id": "develop/ai/search-and-query/advanced-concepts/sorting", "summary": "Support for sorting query results", "title": "Sorting by indexed fields", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/sorting/" }, { "id": "develop/ai/search-and-query/advanced-concepts/tags", "summary": "How to use tag fields for exact match searches and high-performance filtering", "title": "Tag fields", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/tags/" }, { "id": "develop/ai/search-and-query/advanced-concepts/highlight", "summary": "Highlighting full-text results", "title": "Highlighting", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/highlight/" }, { "id": "develop/ai/search-and-query/advanced-concepts/expiration", "summary": "How Redis Search handles expiring keys and hash fields", "title": "Key and field expiration behavior", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/expiration/" }, { "id": "develop/ai/search-and-query/advanced-concepts/transactions", "summary": "How Redis Search commands behave inside MULTI/EXEC transactions and Lua scripts", "title": "Search commands in MULTI/EXEC transactions and Lua scripts", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/transactions/" }, { "id": "develop/ai/search-and-query/advanced-concepts/scoring", "summary": "Full-text scoring functions", "title": "Scoring documents", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/scoring/" }, { "id": "develop/ai/search-and-query/advanced-concepts/stemming", "summary": "Stemming support", "title": "Stemming", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/stemming/" }, { "id": "develop/ai/search-and-query/advanced-concepts/synonyms", "summary": "Details on synonym support with Redis Open Source", "title": "Synonym support", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/synonyms/" }, { "id": "develop/ai/search-and-query/advanced-concepts/spellcheck", "summary": "Query spelling correction support", "title": "Spellchecking", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/spellcheck/" }, { "id": "develop/ai/search-and-query/advanced-concepts/geo", "summary": "Learn how to use geospatial fields and perform geospatial queries in Redis", "title": "Geospatial", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/geo/" }, { "id": "develop/ai/search-and-query/advanced-concepts/phonetic_matching", "summary": "Details about phonetic matching capabilities", "title": "Phonetic matching", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/phonetic_matching/" }, { "id": "develop/ai/search-and-query/advanced-concepts/chinese", "summary": "Chinese support for searching and querying in Redis Open Source", "title": "Chinese support", "url": "https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/chinese/" } ], "page_type": "content", "content_hash": "f33c550c3917b1ae6ea7655749ad864811437cad733468561e42f045b4c155d5", "sections": [ { "id": "overview", "title": "Overview", "role": "overview", "text": "Redis Open Source supports the following Redis Search features. This article provides you an overview." }, { "id": "indexing-features", "title": "Indexing features", "role": "content", "text": "* Secondary indexing\n* Vector indexing\n* Index on [JSON](https://redis.io/docs/latest/develop/data-types/json) documents\n* Full-text indexing of multiple fields in a document\n* Incremental indexing without performance loss\n* Document deletion and updating with index garbage collection" }, { "id": "query-features", "title": "Query features", "role": "content", "text": "* Multi-field queries\n* Query on [JSON](https://redis.io/docs/latest/develop/data-types/json) documents\n* [Aggregation](https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/aggregations)\n* Boolean queries with AND, OR, and NOT operators between subqueries\n* Optional query clauses\n* Retrieval of full document contents or only their IDs\n* Exact phrase search and slop-based search\n* Numeric filters and ranges\n* Geo-filtering using Redis [geo commands](/commands/?group=geo)\n* [Vector search](https://redis.io/docs/latest/develop/ai/search-and-query/vectors)\n* [Key and field expiration behavior](https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/expiration)\n* [Search commands in MULTI/EXEC transactions and Lua scripts](https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/transactions)" }, { "id": "full-text-search-features", "title": "Full-text search features", "role": "content", "text": "* [Prefix-based searches](https://redis.io/docs/latest/develop/ai/search-and-query/query#prefix-matching)\n* Field weights\n* [Auto-complete](https://redis.io/docs/latest/develop/ai/search-and-query/administration/overview#auto-complete) and fuzzy prefix suggestions\n* [Stemming](https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/stemming)-based query expansion for [many languages](https://redis.io/docs/latest/develop/ai/search-and-query/advanced-concepts/stemming#supported-languages) using [Snowball](http://snowballstem.org/)\n* Support for custom functions for query expansion and scoring (see [Extensions](https://redis.io/docs/latest/develop/ai/search-and-query/administration/extensions))\n* Unicode support (UTF-8 input required)\n* Document ranking" }, { "id": "cluster-support", "title": "Cluster support", "role": "content", "text": "The Redis Search features of Redis Open Source are also available for distributed databases that can scale to billions of documents and hundreds of servers." }, { "id": "supported-platforms", "title": "Supported platforms", "role": "compatibility", "text": "Redis Open Source is developed and tested on Linux and macOS on x86_64 CPUs.\n\nAtom CPUs are not supported.\n\n
" } ], "examples": [] }