redis

name	redis
description	Redis 8 — in-memory data store. Cache, sessions, rate limiting, pub/sub, streams, hash field TTL, vector search. Use when: redis, redis 8, ioredis, node-redis, redis-om, valkey, SET EX, GETEX, HSET, HEXPIRE, LPUSH, RPOPLPUSH, ZADD, ZRANGEBYSCORE, XADD, XREADGROUP, consumer group, SUBSCRIBE, PUBLISH, MULTI EXEC pipeline, Lua EVAL, BITFIELD, BITOP, HyperLogLog PFADD, GEO commands, Redis Streams, RedisJSON, RediSearch FT.SEARCH, RedisInsight, RDB, AOF, AOF rewrite, cluster, sentinel, ACL. SKIP: BullMQ queue patterns (→bullmq), Memcached, Valkey-only forks.
stacks	["redis","cache","nodejs-backend","linux"]
packages	["ioredis","redis","redis-om","@redis/json","@redis/search"]
tags	["redis","cache","session","pubsub","streams","rate-limit","vector-search"]
manifests	["redis.conf"]
source	vechkasov-global-skills
risk	high-stakes

🎯 Version Requirements (May 2026)

Primary pins:

• Redis: 8.x

Source of truth: STACK_VERSIONS.md — verified 2026-05-16

Usage

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Use this skill when

• Using Redis 8 as a cache, session store, distributed lock, rate-limit backend, or queue substrate
• Picking a client — ioredis (Node default) vs node-redis (official) vs redis-om (object mapper)
• Designing cache-aside / write-through patterns with TTL strategies and stampede protection
• Picking the right data structure (string/list/hash/set/zset/stream/HLL/GEO/bitmap)
• Building Pub/Sub channels or Streams consumer groups (XREADGROUP / XACK / XAUTOCLAIM)
• Configuring persistence (RDB + AOF) and replication / Sentinel / Cluster
• Setting up ACLs, TLS, and command renaming for production lockdown
• Adopting Redis 8 features — hash field TTL (HEXPIRE), enhanced FT.SEARCH, vector data type
• Tuning maxmemory / maxmemory-policy per use case (cache vs queue vs primary store)
• Distinguishing Redis (BSL/SSPLv1) from Valkey (LF Apache-2.0 fork after 7.4) when picking deployment

Do not use this skill when

• Task is BullMQ queue / worker / job options — use bullmq
• Task is Memcached (different protocol, no persistence) — out of scope
• Task is Valkey-fork-only patterns (post-Redis 7.4 OSS branch) — note the distinction but use this skill (commands are >99% identical)
• Task is a generic cache layer concept without Redis specifics — use nodejs
• Task is Postgres LISTEN/NOTIFY — use postgresql

Purpose

Redis 8 is the dominant in-memory data store in 2026 — cache, session store, distributed lock, queue (lists/streams), pub/sub broker, leaderboard/counter, feature store. Redis 8 unified the former Redis Stack modules (RedisJSON, RediSearch, RedisTimeSeries, RedisBloom) into the core binary. Hash field TTL (HEXPIRE/HTTL/HPERSIST, introduced in 7.4 and tightened in 8.x), enhanced FT.SEARCH with expiring fields, and vector data types are the Redis 8 highlights.