Full-text, exact-match, range, and hybrid search on Amazon ElastiCache

This article announces new search capabilities for Amazon ElastiCache, enabling full-text, exact-match, numeric range, and hybrid search directly in cache without separate search services.

• Full-text search with prefix matching, fuzzy matching, and proximity matching for type-ahead and typo tolerance
• Exact-match search retrieves documents by precise values across text, tag, and numeric attributes
• Numeric range search filters documents by price, dates, transaction amounts, and other thresholds
• Hybrid search combines text, tag, numeric filters with vector similarity in single queries
• Microsecond latency with throughput up to millions of queries per second on ElastiCache version 9.0 for Valkey
• Use cases include catalog discovery, recommendation engines, agentic memory, leaderboards, session management
• Real-time indexing ensures read-after-write consistency for immediately searchable data
• Performance benchmarks show text search at 60,000 QPS and prefix matching at 57,692 QPS

ElastiCache now provides low-latency, scalable search across dynamic data without external search services, enabling rich query patterns on cached data.