---
title: "Redis 8.8: New array data structure & open source features"
url: https://daily.dev/posts/redis-8-8-new-array-data-structure-open-source-features-hbi5ralxf
source_url: https://redis.io/blog/announcing-redis-8-8
type: article
source: "Redis"
published: 2026-06-02T19:52:13.019Z
updated: 2026-06-02T19:52:45.015Z
tags: ["backend", "redis", "data-structures"]
reading_time: 16
upvotes: 1
comments: 0
language: en
---

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# Redis 8.8: New array data structure & open source features

**[Redis](https://daily.dev/sources/redislabs)** · 16 min read · 1 upvotes · 0 comments

## Summary

Redis 8.8 is now available as open source, introducing a new general-purpose array data structure with dynamic sizing, sparse support, ring buffer semantics, and server-side aggregation. Performance improvements are significant across multiple data types: MGET throughput up to 68%, XREADGROUP up to 83%, sorted set operations up to 74%, and persistence/replication up to 60% faster. New features include a built-in window counter rate limiter via the INCREX command (replacing Lua scripting workarounds), XNACK for explicit stream message rejection with SILENT/FAIL/FATAL modes, subkey notifications for hash field-level events, multiple aggregators in a single time series command, explicit floating-point array type control in JSON (BF16/FP16/FP32/FP64), and a COUNT aggregator for sorted set union/intersection operations.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://redis.io/blog/announcing-redis-8-8>

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---

Tags: [#backend](https://daily.dev/tags/backend), [#redis](https://daily.dev/tags/redis), [#data-structures](https://daily.dev/tags/data-structures)

[View this post on daily.dev](https://daily.dev/posts/redis-8-8-new-array-data-structure-open-source-features-hbi5ralxf)