What's new? on Docs

Redis 8.4

Mon, 01 Jan 0001 00:00:00 +0000

Redis 8.4 builds on the foundation of Redis 8.2 with significant enhancements to cluster operations, string manipulation, and stream processing capabilities.

This release delivers major improvements across multiple areas:

Atomic cluster slot migration for zero-downtime operations
Enhanced string operations with atomic compare-and-set functionality
Advanced stream processing with idle entry claiming
Hybrid search capabilities combining multiple ranking algorithms
High-performance SIMD optimizations for bit operations and vector processing
Improved JSON handling with better memory efficiency

Below is a detailed breakdown of these updates.

Redis 8.2

Mon, 01 Jan 0001 00:00:00 +0000

Redis 8.2 builds on the foundation of Redis 8.0 with significant performance and memory optimizations, enhanced streaming capabilities, and improved cluster management tools.

This release delivers major improvements across multiple areas:

Enhanced Redis Streams with new commands for better consumer group management
New bitmap operations for advanced bit manipulation
Advanced cluster monitoring with per-slot usage metrics
Optimized vector search with new compression algorithms
Enhanced keyspace notifications with new event types
More than 15 performance and resource utilization improvements

Below is a detailed breakdown of these updates.

Redis 8.0

Mon, 01 Jan 0001 00:00:00 +0000

Redis 8.0 introduces powerful new capabilities, including the beta release of the Vector Set data structure, designed for AI use cases such as semantic search and recommendation systems.

This release also delivers over 30 performance improvements, including:

Up to 87% faster command execution
Up to 18% faster replication

Additionally, the Redis Community Edition has been renamed to Redis Open Source, marking a shift toward a unified, modern distribution. This version offers the full power of Redis — no modules, no fragmentation — just Redis.

Redis 7.4

Mon, 01 Jan 0001 00:00:00 +0000

Redis 7.4 introduces several new features and improvements aimed at enhancing memory efficiency, performance, and ease of use for various applications. These updates include support for hash field expiration, new memory-efficient data types for AI workloads, simplified secondary indexing, and time series optimizations. Additionally, Redis 7.4 brings several behavior and component changes. Below is a detailed breakdown of these updates.

New features

Hash field expiration support

Redis 7.4 adds the ability to set expiration times for individual hash fields or adjust their remaining TTL. This feature, long-requested by users, improves memory efficiency and performance, especially in caching and session storage scenarios.

Redis 7.2

Mon, 01 Jan 0001 00:00:00 +0000

Redis version 7.2 introduces new capabilities, including improved geospatial queries, and streamlined JSON data manipulation. Performance optimizations, client-side enhancements, and behavioral refinements further improve the efficiency, security, and usability of Redis. Below is a detailed breakdown of these updates.

New features

Geospatial queries with polygon search

Redis Query Engine now supports querying geospatial data using polygon search, enabling developers to efficiently filter and retrieve data within complex geographic boundaries.

Redis 6.2

Mon, 01 Jan 0001 00:00:00 +0000

Redis version 6.2 introduces new capabilities designed to improve data indexing, querying, and analytics. This update brings multi-value indexing, expanded wildcard query support, and a new probabilistic data structure for quantile estimation. Additionally, significant enhancements to Redis streams and time series data processing offer greater flexibility for developers working with real-time and historical datasets. Over 25 new commands have been added to Redis that address key feature requests and further extending its capabilities. Below is a detailed breakdown of these improvements.

Redis feature sets

Mon, 01 Jan 0001 00:00:00 +0000

A Redis feature set includes a specific Redis database version along with the advanced capabilities and data structures provided by compatible module versions.

To use a new feature introduced in a later feature set, you must upgrade the corresponding components according to the following table.

Redis feature set	What's new
Feature set version: 8.4	See here
Feature set version: 8.2	See here
Feature set version: 8.0	See here
Feature set version: 7.4 Component versions: Redis 7.4 Search 2.10 JSON 2.8 Time series 1.12 Bloom 2.8	Hash: - Expiration of individual hash fields. Streams: - To start reading from the last stream message, use `XREAD` with the new ID value `+`. Time series: Insertion-filter for close samples. JSON: - A fix to not duplicate `AOF` commands multiple times in `JSON.MSET`. Probabilistic: - Returns an error if `CMS.MERGE` results in an overflow or underflow. Redis Query Engine: - New `BFLOAT16` and `FLOAT16` vector data types, reducing memory consumed by vectors while preserving accuracy. - Support for indexing empty and missing values and enhanced developer experience for queries with exact matching capabilities. - You can match `TAG` fields without needing to escape special characters. - Expanded geospatial search with new `INTERSECT` and `DISJOINT` operators, improved reporting of the memory consumed by the index, and exposed full-text scoring in aggregation pipelines.
Feature set version: 7.2 Component versions: Redis 7.2 Search 2.8 JSON 2.6 Time series 1.10 Bloom 2.6 Gears 2.0	- Performance and resource utilization improvements, including significant memory and speed optimizations for lists, sets, and sorted sets. JSON: - New JSON commands: `JSON.MERGE` and `JSON.MSET`. Redis Query Engine: - Geo polygon search. Compatibility changes: - Redis 7.2 uses a new format (version 11) for RDB files, which is incompatible with older versions. - Redis feature set 7.2 does not include graph capabilities.
Feature set version: 6.2 Component versions: Redis 6.2 Search 2.6 JSON 2.4 Time series 1.8 Bloom 2.4 Graph 2.10	Time series: - Time series gap filling. JSON: - Improved JSON path parser. Probabilistic: - New probabilistic data structure t-digest. Redis Query Engine: - Wildcard queries for `TEXT` and `TAG`. - Suffix search. - Multi-value indexing and queries. Graph: - New pathfinding algorithms for graphs.