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# Redis Documentation

> Redis: in-memory data platform for caching, real-time apps, search, vectors, streams, pub/sub, and enterprise deployments (Redis Cloud, Redis Software, open source).

## Core Docs

- [Docs homepage](https://redis.io/docs/latest/): Entry point for Redis documentation—install, develop, operate, APIs, and feature references for developers and operators.
- [APIs](https://redis.io/docs/latest/apis/index.html.md): Redis API surfaces and integration entry points for programmatic access and automation.
- [Quick starts](https://redis.io/docs/latest/develop/get-started/index.html.md): First-run setup, basic commands, and core data types to bootstrap application development.

## Commands Reference

- [Commands index](https://redis.io/docs/latest/commands/): Full catalog of Redis commands grouped by category with syntax, parameters, and behavioral notes.
- [AUTH](https://redis.io/docs/latest/commands/auth/index.html.md): Client authentication against Redis using passwords, ACL users, and connection security.
- [DEL](https://redis.io/docs/latest/commands/del/index.html.md): Deletes one or more keys immediately and reclaims memory for those keys.
- [EXPIRE](https://redis.io/docs/latest/commands/expire/index.html.md): Sets a TTL in seconds on a key for time-bound cache and session semantics.
- [GET](https://redis.io/docs/latest/commands/get/index.html.md): Reads a string value for a key; returns null when the key is absent.
- [HSET](https://redis.io/docs/latest/commands/hset/index.html.md): Writes field–value pairs on a Redis hash, creating the hash when needed.
- [SET](https://redis.io/docs/latest/commands/set/index.html.md): Stores a string value with optional NX/XX, expiration, and conditional semantics.
- [TTL](https://redis.io/docs/latest/commands/ttl/index.html.md): Returns remaining seconds until key expiry for keys with a timeout.

## Development

- [Develop with Redis](https://redis.io/docs/latest/develop/index.html.md): Hub for application development topics—clients, data modeling, and runtime behavior.
- [Understand Redis data types](https://redis.io/docs/latest/develop/data-types/index.html.md): Strings, hashes, lists, sets, sorted sets, streams, and module-backed types with usage patterns.
- [Redis Search and query](https://redis.io/docs/latest/develop/interact/search-and-query/index.html.md): Secondary indexes, full-text search, filtering, and query execution on Redis data.
- [Vectors](https://redis.io/docs/latest/develop/interact/search-and-query/advanced-concepts/vectors/index.html.md): Storing embeddings, vector indexes (HNSW, flat), kNN and hybrid retrieval for AI and search workloads.
- [Indexing](https://redis.io/docs/latest/develop/interact/search-and-query/indexing/index.html.md): Defining and maintaining indexes for efficient search and aggregations.
- [Pub/Sub](https://redis.io/docs/latest/develop/interact/pubsub/index.html.md): Channel-based publish/subscribe messaging, fan-out patterns, and limitations versus persistent streams.
- [Streams](https://redis.io/docs/latest/develop/data-types/streams/index.html.md): Append-only streams, consumer groups, pending entries, and event-sourcing style consumption with XADD, XREADGROUP, and related commands.
- [Programmability (Lua and functions)](https://redis.io/docs/latest/develop/interact/programmability/index.html.md): Server-side scripting with EVAL/EVALSHA, function APIs, and atomic multi-key logic on the Redis process.
- [Key eviction](https://redis.io/docs/latest/develop/reference/eviction/index.html.md): Eviction policies (allkeys-lru, volatile-ttl, etc.) when memory limits are reached.
- [Redis CLI](https://redis.io/docs/latest/develop/tools/cli/index.html.md): Interactive command-line access, scripting, and troubleshooting against Redis instances.
- [Redis Insight release notes](https://redis.io/docs/latest/develop/tools/insight/release-notes/index.html.md): Changes and fixes for the Redis Insight desktop and web database UI.
- [Redis for VS Code](https://redis.io/docs/latest/develop/tools/redis-for-vscode/index.html.md): VS Code extension for browsing keys, running commands, and building queries from the editor.
- [Distributed locks](https://redis.io/docs/latest/develop/use/patterns/distributed-locks/index.html.md): Safe lock patterns with SET NX EX, fencing tokens, and correctness considerations.

## Client Libraries

- [Connect with Redis client libraries](https://redis.io/docs/latest/develop/clients/index.html.md): Official guidance and comparison tables for Node.js (node-redis), Java (Jedis, Lettuce), Go (go-redis), .NET (NRedisStack), Python (redis-py), PHP, C, Rust, and related OM libraries.
- [Node.js (node-redis)](https://redis.io/docs/latest/develop/clients/nodejs/index.html.md): JavaScript/TypeScript client for Redis—connection, pipelining, RESP3, and stack modules.
- [Java (Jedis)](https://redis.io/docs/latest/develop/clients/jedis/index.html.md): Synchronous Java client covering Redis core and enterprise features with straightforward APIs.
- [Go (go-redis)](https://redis.io/docs/latest/develop/clients/go/index.html.md): Go client for Redis with connection pooling, cluster, and module usage patterns.
- [.NET (NRedisStack)](https://redis.io/docs/latest/develop/clients/dotnet/index.html.md): C# client for Redis Stack capabilities including JSON, search, time series, and probabilistic structures.
- [Python (redis-py)](https://redis.io/docs/latest/develop/clients/redis-py/index.html.md): Official Python client—sync and asyncio APIs, connection pooling, pipelines, Pub/Sub, and Redis Cluster routing.

## Integrations

- [Libraries and tools](https://redis.io/docs/latest/integrate/index.html.md): Ecosystem integrations across languages, frameworks, cloud marketplaces, and data tools.
- [Prometheus metrics (Redis Enterprise)](https://redis.io/docs/latest/integrate/prometheus-with-redis-enterprise/prometheus-metrics-definitions/index.html.md): Metric names, types, and scraping guidance for Redis Enterprise observability.
- [Redis Data Integration (docs)](https://redis.io/docs/latest/integrate/redis-data-integration/index.html.md): CDC-style sync from relational and operational databases into Redis with declarative pipelines.
- [Python client (redis-py)](https://redis.io/docs/latest/integrate/redis-py/index.html.md): Official Python driver—connections, pipelines, Pub/Sub, and cluster usage.
- [RedisVL](https://redis.io/docs/latest/integrate/redisvl/index.html.md): Python library for vector embeddings, indexes, and retrieval workflows on Redis.
- [RIOT](https://redis.io/docs/latest/integrate/riot/index.html.md): Bulk import/export and live replication tooling between Redis and external systems.
- [Redis Cloud + Vercel](https://redis.io/docs/latest/operate/rc/cloud-integrations/vercel/index.html.md): Provisioning Redis Cloud from Vercel and wiring env vars for serverless apps.

## Operations

- [Operate Redis](https://redis.io/docs/latest/operate/index.html.md): Deployment, scaling, backup, security, and day-2 operations across Redis products.
- [Redis Enterprise on Kubernetes](https://redis.io/docs/latest/operate/kubernetes/index.html.md): Operator-based install, upgrades, and lifecycle for Redis Enterprise on K8s.
- [Install Redis](https://redis.io/docs/latest/operate/oss_and_stack/install/install-stack/index.html.md): Platform packages, containers, and local install paths for Redis stack components.
- [Redis configuration](https://redis.io/docs/latest/operate/oss_and_stack/management/config/index.html.md): redis.conf directives for networking, memory, persistence, security, and modules.
- [Redis persistence](https://redis.io/docs/latest/operate/oss_and_stack/management/persistence/index.html.md): RDB snapshots, AOF rewrite, durability tradeoffs, and recovery procedures.
- [ACL and access control](https://redis.io/docs/latest/operate/oss_and_stack/management/security/acl/index.html.md): Redis ACL users, command/category permissions, key patterns, and AUTH integration.
- [Redis Cloud operations](https://redis.io/docs/latest/operate/rc/index.html.md): Cloud consoles, databases, plans, networking, backups, and metrics for managed Redis.
- [Back up and export (Redis Cloud)](https://redis.io/docs/latest/operate/rc/databases/back-up-data/index.html.md): Scheduled and on-demand backups, exports, and retention for cloud databases.
- [Redis Cloud quick start](https://redis.io/docs/latest/operate/rc/rc-quickstart/index.html.md): Create a cloud database, connect a client, and validate connectivity quickly.
- [Install Redis Insight](https://redis.io/docs/latest/operate/redisinsight/install/index.html.md): Desktop, Docker, and K8s install paths for the Redis Insight GUI.
- [Redis Enterprise Software](https://redis.io/docs/latest/operate/rs/index.html.md): On-prem cluster architecture, shards, proxies, and RS-specific administration.
- [Connect to a database (RS)](https://redis.io/docs/latest/operate/rs/databases/connect/index.html.md): Connection endpoints, TLS, and application wiring for Redis Software databases.
- [Test client connectivity (RS)](https://redis.io/docs/latest/operate/rs/databases/connect/test-client-connectivity/index.html.md): Built-in checks to validate client reachability and ACL/password correctness.
- [Hardware requirements (RS)](https://redis.io/docs/latest/operate/rs/installing-upgrading/install/plan-deployment/hardware-requirements/index.html.md): CPU, RAM, disk, and network guidance for production Redis Software clusters.
- [Product lifecycle (RS)](https://redis.io/docs/latest/operate/rs/installing-upgrading/product-lifecycle/index.html.md): Supported versions, end-of-life timelines, and upgrade planning for Redis Software.
- [Network ports (RS)](https://redis.io/docs/latest/operate/rs/networking/port-configurations/index.html.md): Client, cluster bus, discovery, and management ports for firewall planning.
- [redis-cli (RS reference)](https://redis.io/docs/latest/operate/rs/references/cli-utilities/redis-cli/index.html.md): CLI usage tailored to Redis Enterprise Software operations.
- [REST API (RS)](https://redis.io/docs/latest/operate/rs/references/rest-api/index.html.md): Automate cluster and database management via Redis Software REST endpoints.
- [Release notes (RS)](https://redis.io/docs/latest/operate/rs/release-notes/index.html.md): Version-by-version changes, fixes, and compatibility notes for Redis Software.

## Products

- [Redis Cloud](https://redis.io/cloud/): Fully managed Redis 8 on AWS, GCP, and Azure with Active-Active, Redis Flex tiering, SLA tiers, and integrated observability.
- [Redis Software](https://redis.io/software/): Self-managed Redis Enterprise for private cloud, on-premises, and Kubernetes with clustering, HA, and enterprise security controls.
- [Redis Open Source](https://redis.io/open-source/): Free Redis 8 distribution—core commands, modules, Redis Insight, and client ecosystem for self-hosted workloads.
- [Downloads](https://redis.io/downloads/): Versioned tarballs, containers, and platform packages for Redis open source and Redis Software builds.
- [Pricing](https://redis.io/pricing/): Redis Cloud plan comparison—Free, Essentials, Pro—and on-premises pricing entry points.
- [Redis Insight](https://redis.io/insight/): Free GUI and Workbench CLI for browsing data, profiling commands, Streams/Pub/Sub views, and Copilot-assisted query help.
- [Redis Data Integration (product)](https://redis.io/data-integration/): Near-real-time sync from Oracle, PostgreSQL, MySQL, MongoDB, SQL Server, and cloud SQL into Redis with CDC and declarative transforms.

## AI

- [Redis for AI](https://redis.io/redis-for-ai/): Positioning for RAG, vector retrieval, semantic cache, agent memory, and hybrid search on Redis as a unified low-latency context layer.
- [LangCache](https://redis.io/langcache/): Managed semantic caching REST API to cut LLM token cost and latency via embedding-backed similarity matching.
- [LLM and agent index (llms.txt)](https://redis.io/agents/): Same machine-readable URL map as /llms.txt for AI tools and crawlers (rewrite alias).
- [Redis for AI and search (docs)](https://redis.io/docs/latest/develop/ai/index.html.md): Official docs hub for vectors, RAG recipes, LangChain/LlamaIndex notes, benchmarks, and ecosystem links.

## Solutions

### Search & Query

- [Redis Query Engine / Search](https://redis.io/query-engine/): Marketing hub for full-text, vector, geospatial, secondary index, aggregation, and hybrid queries executed in Redis.
- [Vector database](https://redis.io/solutions/vector-database/): High-throughput approximate nearest neighbor search, hybrid filtering, RedisVL, and GenAI integration patterns.
- [What is NoSQL?](https://redis.io/nosql/what-is-nosql/): NoSQL categories and where Redis fits as memory-first document, search, and operational store.

### Use Cases

- [Solutions library](https://redis.io/solutions/): Index of Redis solution areas—vector DB, caching, messaging, session, deduplication, and industry patterns.
- [Caching](https://redis.io/solutions/caching/): Cache-aside, write-through, write-behind, prefetch, and enterprise-scale latency/HA positioning.
- [Query caching](https://redis.io/solutions/query-caching-with-redis-enterprise/): Accelerating repeated database queries by caching result sets in Redis Enterprise.
- [Leaderboards](https://redis.io/solutions/leaderboards/): Real-time ranking with sorted sets (ZADD, ZRANGE, ZUNIONSTORE) at scale.
- [Messaging](https://redis.io/solutions/messaging/): Pub/Sub fan-out, Streams consumer groups, lists, and sorted-set queues for microservices.
- [Deduplication](https://redis.io/solutions/deduplication/): Sets, Bloom, and Cuckoo filters for idempotency and stream dedupe at low latency.
- [Fast data ingest](https://redis.io/solutions/fast-data-ingest/): High-write-throughput patterns with Streams, Pub/Sub, lists, and geo-distributed Active-Active notes.
- [Authentication token storage](https://redis.io/solutions/authentication-token-storage/): Session and OAuth token storage with sub-ms reads and enterprise HA for login flows.
- [Feature store](https://redis.io/feature-store/): Online feature serving with Featureform—batch, streaming, governance, and Feast/Tecton integration options.

## Dev Hub

- [Dev Hub](https://redis.io/dev/): Curated entry to tutorials, language tracks, operator content, and featured learning paths on redis.io.
- [Tutorials index](https://redis.io/tutorials/): Paginated library of hands-on tutorials with filters by role (AI, developers, operators).

## Tutorials

### For AI

  - [Build a Conversational Agent with Redis Using Flowise](https://redis.io/tutorials/howtos/solutions/flowise/conversational-agent.md): Hands-on Redis.io tutorial: Build a Conversational Agent with Redis Using Flowise. Covers patterns, commands, and integration steps cited from redis.io.
  - [Build a Slack bot with Chat SDK and Redis distributed locking](https://redis.io/tutorials/chat-sdk-slackbot-distributed-locking.md): Hands-on Redis.io tutorial: Build a Slack bot with Chat SDK and Redis distributed locking. Covers patterns, commands, and integration steps cited from redis.io.
  - [Build an academic RAG app for arXiv paper Q&A with Redis and LangChain](https://redis.io/tutorials/vector-arxiv-paper-qa.md): Hands-on Redis.io tutorial: Build an academic RAG app for arXiv paper Q&A with Redis and LangChain. Covers patterns, commands, and integration steps cited from redis.io.
  - [Building a product management agent (PM Maestro) with Redis and LangGraph](https://redis.io/tutorials/howtos/product-management-agent-langgraph.md): Hands-on Redis.io tutorial: Building a product management agent (PM Maestro) with Redis and LangGraph. Covers patterns, commands, and integration steps cited from redis.io.
  - [Building a Two Tower Recommendation System with RedisVL](https://redis.io/tutorials/building-a-two-tower-recommendation-system-with-redis-vl.md): Hands-on Redis.io tutorial: Building a Two Tower Recommendation System with RedisVL. Covers patterns, commands, and integration steps cited from redis.io.
  - [Building an AI-Powered Video Q&A Application with Vector Search, Redis and LangChain](https://redis.io/tutorials/howtos/solutions/vector/ai-qa-videos-langchain-redis-openai-google.md): Hands-on Redis.io tutorial: Building an AI-Powered Video Q&A Application with Vector Search, Redis and LangChain. Covers patterns, commands, and integration steps cited from redis.io.
  - [Context Engineering Workshop for Java Developers](https://redis.io/tutorials/context-engineering-workshop-java.md): Hands-on Redis.io tutorial: Context Engineering Workshop for Java Developers. Covers patterns, commands, and integration steps cited from redis.io.
  - [Getting started with vector sets](https://redis.io/tutorials/howtos/vector-sets-basics.md): Hands-on Redis.io tutorial: Getting started with vector sets. Covers patterns, commands, and integration steps cited from redis.io.
  - [How to build a car dealership AI agent with Google ADK and Redis Agent Memory Server](https://redis.io/tutorials/build-a-car-dealership-agent-with-google-adk-and-redis-agent-memory.md): Hands-on Redis.io tutorial: How to build a car dealership AI agent with Google ADK and Redis Agent Memory Server. Covers patterns, commands, and integration steps cited from redis.io.
  - [How to build a document agent with Redis, RAG, and agent memory](https://redis.io/tutorials/build-a-document-agent-with-redis-rag-and-agent-memory.md): Hands-on Redis.io tutorial: How to build a document agent with Redis, RAG, and agent memory. Covers patterns, commands, and integration steps cited from redis.io.
  - [How to build a face similarity search app with Redis vector sets](https://redis.io/tutorials/face-similarity-search-with-redis-vector-sets.md): Hands-on Redis.io tutorial: How to build a face similarity search app with Redis vector sets. Covers patterns, commands, and integration steps cited from redis.io.
  - [How to Build a