Redis

In-memory data store for caching, queues, rate limiting, and real-time data.

EstablishedOpen SourceLow lock-in
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Pricing

Free tier

Flat rate

Adoption

→Stable

License

Open Source

Data freshness

Verified · Jun 20, 2026

Overview

What is Redis?

Redis is a blazing-fast in-memory key-value store used for caching, session storage, pub/sub, rate limiting, and queues.

Key differentiator

“The standard in-memory store for caching, queues, and real-time data.”

Capability profile

Capability Radar

Ease of StartEcosystemValueMaturityFlexibilityScale Ready

Honest assessment

Strengths & Weaknesses

↑ Strengths

Extremely fasthigh

In-memory access delivers sub-millisecond latency

Versatile primitivesmedium

Strings, hashes, streams, pub/sub, sorted sets for many patterns

Ubiquitous ecosystemmedium

Clients and managed options everywhere (incl. serverless Upstash)

↓ Weaknesses

Memory-bound and volatile by defaultmedium

Datasets must fit in RAM; persistence needs configuration

Not a primary system-of-recordlow

Best as a cache/auxiliary store, not source of truth

Fit analysis

Who is it for?

✓ Best for

Caching and rate limiting

Sub-ms reads relieve your primary DB

Queues and real-time features

Streams and pub/sub for events

Cost structure

Pricing

Free Tier

Available

Open source free; Redis Cloud free 30MB

Starts at

$0 self-hosted

Model

Flat rate

Enterprise

Available

Performance benchmarks

How Fast Is It?

Ecosystem

Relationships

Alternatives

Upstash

Next step

Get Started with Redis

Step-by-step setup guide with code examples and common gotchas.

View Setup Guide →