All 7 RedisSearch (Full Text Search) questions
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How do you create a search index in RedisSearch, and what does defining a schema for that index actually do? How do you write a RedisSearch query that combines full text search with a numeric range filter? How do you sort and paginate search results returned by a RedisSearch query? How do you update or delete a RedisSearch index without affecting the underlying data it was built from? How would you design a RedisSearch based product search feature that supports faceted filtering, such as showing available categories and their counts alongside search results? What are the memory and performance tradeoffs of adding RedisSearch indexes to a large existing dataset in Redis?
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What is RedisSearch, and what capabilities does it add to a Redis deployment?

Beginner

Answer

RedisSearch adds powerful indexing and querying capabilities to Redis, letting you perform full text search, filter and sort by numeric or tag fields, and run complex queries across your data directly within Redis, capabilities that go well beyond what Redis's core commands alone can provide.
FT.CREATE idx ON HASH PREFIX 1 product: SCHEMA name TEXT price NUMERIC
FT.SEARCH idx 'laptop'
Real-world example An online store adds RedisSearch to their existing Redis deployment, gaining the ability to let customers search for products by name while also filtering by price range, all within the same Redis instance already used for caching.

Common follow-ups: Does RedisSearch work with data already stored in Redis using hashes and JSON documents?;How does search performance compare to a dedicated search engine?

RedisJSON;Redis Modules Overview
All 7 RedisSearch (Full Text Search) questions