Redis

118 likes

The in-memory data store used by millions of developers as a cache, vector database, document database, streaming engine, and message broker.

Cost / License

Free
Open Source

Origin

United Kingdom

Platforms

Mac
Linux
Self-Hosted
Software as a Service (SaaS)
Docker

Redis alternatives

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52alternatives

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Comments and Reviews

Hamze ZareFounder at fanpino

CommentAug 22, 2026

Founder at fanpino

We use Redis for session caching and rate limiting across a few of our products (FastAPI backends). It's stupidly reliable for what it does - the kind of dependency you forget is even running because it just doesn't cause problems. Setup is trivial in Docker, and the docs are some of the best in the self-hosted database space. Only gripe is remembering to set maxmemory-policy before production, since the default eviction behavior isn't what most people expect.

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Install from the command line

brew install redis

Be careful what you paste into a terminal. Check what a command installs before running it.

What is Redis?

The in-memory data store used by millions of developers as a cache, vector database, document database, streaming engine, and message broker.

Core capabilities

In-memory data structures: Well-known as a "data structure server", with support for strings, hashes, lists, sets, sorted sets, streams, and more.
Programmability: Server-side scripting with Lua and server-side stored procedures with Redis Functions.
Extensibility: A module API for building custom extensions to Redis in C, C++, and Rust.
Persistence: Keeps the dataset in memory for fast access, but can also persist all writes to permanent storage to survive reboots and system failures.
Clustering: Horizontal scalability with hash-based sharding, scaling to millions of nodes with automatic re-partitioning when growing the cluster.
High availability: Replication with automatic failover for both standalone and clustered deployments.

Use cases

Real-time data store: Redis' versatile in-memory data structures enable building data infrastructure for real-time applications that require low latency and high-throughput.
Caching & session storage: Redis' speed makes it ideal for caching database queries, complex computations, API calls, and session state.
Streaming & messaging: The stream data type enables high-rate data ingestion, messaging, event sourcing, and notifications.

Redis Stack

Redis Stack extends Redis with modern data models and processing engines to provide a complete developer experience. Download the source, install using your favorite package manager, or spin it up for free in the cloud.