Redis
High-performance, in-memory data engine for real-time applications and AI agents
- Vendor
- Redis Ltd.
- Also known as
- redis-db
Available worldwide
What is Redis?
A multi-purpose in-memory data platform that functions as a cache, vector database, document store, streaming engine, and message broker, with built-in support for advanced search, transactions, and multi-region replication.
Redis pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free open-source software plus three cloud subscription tiers (Essentials, Flex, Pro)
Essentials
Single database with in-memory storage
- storage
- 12 GB
- Single database
- Index on RAM
- 99.99% uptime
Flex
RAM and SSD tiered storage for cost optimization
- storage
- 100 GB
- Tiered RAM and SSD storage
- Adjustable RAM ratio
- 99.99% uptime
- Up to 80% cost savings vs RAM alone
Pro
Unlimited scale with active-active replication
- Unlimited databases
- Unlimited storage
- Unlimited ops/sec
- Active-Active multi-region
- 99.999% uptime
What Redis does
The capabilities that matter for key-value stores, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Storage tier
- In-memory
- Persistence
- Append-only log
- Data structures
- Rich types
- Wire protocol
- RESP (Redis)
- Clustering
- Sharded
- Consistency
- Strong
- Eviction / TTL policies
- ✓
- Multi-threaded
- ✓
- Pub/Sub / streams
- ✓
- Transactions / atomic ops
- MULTI-EXEC
- Deployment
- Managed
- Licence class
- Source-available
- Redis API compatibility
- Full
Platform & deployment
Independently observed- CLI
- macOS
- Web
- Linux
- Windows
- Cloud / SaaS
- Hybrid
- On-premise
- Self-hosted
Integrations (22)
Independently observed- Datadog•
- New Relic•
- Oracle
- PostgreSQL
- MySQL
- MariaDB
- Percona XtraDB
- Microsoft SQL Server
- MongoDB
- Cassandra
- Google Cloud SQL
- Grafana
- Prometheus
- AWS
- Microsoft Azure
- Google Cloud
- Python
- Node.js
- Java
- Go
- .NET
- Azure•
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Redis FAQ
Common questions about Redis, answered from independent, dated evidence.
What is Redis and what is it primarily used for?
Redis is an in-memory data platform that stores and retrieves data at high speed, making it ideal for applications requiring real-time performance. It serves use cases including caching, session management, message queuing, leaderboards, fraud detection, and vector search for AI applications.
Source: https://redis.io
Is Redis open-source or commercial?
Redis offers both options: Redis Open Source is free and available under an open-source license (version 8.0 and later uses a tri-license model with RSALv2, SSPLv1, or AGPLv3). For commercial users, Redis Inc. provides Redis Cloud (fully managed) and Redis Software (self-managed on-premise), both with paid plans.
Source: https://github.com/redis/redis
What programming languages and platforms does Redis support?
Redis provides official client libraries for Python, Node.js, Java, Go, and .NET, plus numerous community-maintained libraries for other languages. This wide language support makes it compatible with most modern development stacks.
Source: https://redis.io
What data types does Redis support?
Redis supports a wide range of data types including strings, lists, sets, sorted sets, hashes, streams, JSON, geospatial indexes, time-series data, and vector sets. This variety enables developers to optimize for different use cases from simple key-value storage to complex AI vector search.
How can you deploy Redis?
Redis offers three deployment options: Redis Open Source for self-managed on-premise installations, Redis Software for self-managed hybrid deployments, and Redis Cloud for fully managed cloud hosting on AWS, Azure, or Google Cloud. This flexibility allows organizations to choose based on their infrastructure and operational preferences.
Source: https://redis.io
What is the pricing model for Redis Cloud?
Redis Cloud operates on a tiered model with a free tier (limited to 30 MB), an Essentials tier starting from $5 per month for shared deployment, and a Pro tier (minimum $200 per month) for dedicated deployment with multi-region capabilities. Pricing is based on data size, with option to pay hourly or commit to monthly plans.
Source: https://redis.io/pricing/
What are common alternatives to Redis?
Common alternatives include Memcached for simple caching, database caching layers, key-value stores like DynamoDB or MongoDB, and message brokers like Apache Kafka. The choice depends on whether the primary need is ultra-fast caching, persistent storage, complex queries, or message streaming.
Source: https://redis.io
Does Redis provide persistence and data reliability?
Redis offers optional persistence through snapshotting and append-only file (AOF) logging, though its primary design prioritizes speed via in-memory storage. For critical data, users typically pair Redis with a persistent database or use Redis Cloud's backup features. Advanced plans on Redis Cloud provide up to 99.999% uptime SLA with active-active multi-region deployment.
Source: https://redis.io
Redis alternatives
Other key-value stores we track, ranked by the same independent score.
- UpstashServerless data platform for Redis, vector search, messaging, and workflowsmedium · 72%
- Amazon ElastiCacheA fully managed in-memory caching service with microsecond latency and automatic scalingmedium · 61%
- HazelcastA platform for processing and acting on live data streams with real-time SQL and caching capabilitiesmedium · 57%
- etcdA reliable distributed database for managing critical configuration and state across clustered systemslow · 44%
- RocksDBAn embeddable database library for high-performance key-value storage on flash and RAMlow · 49%
- DragonflyDBA high-performance Redis-compatible in-memory database built for modern multi-threaded hardware and cloud scalemedium · 62%
Compare Redis
Side by side against other key-value stores, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Redis, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Security posture | 100 | 0.12 | 12.2 | ✓ |
| Developer Q&A activity | 79 | 0.14 | 10.6 | ✓ |
| Capabilities | 96 | 0.10 | 9.5 | ✓ |
| Development activity | 52 | 0.14 | 7.0 | ✓ |
| Reliability | 100 | 0.07 | 6.8 | ✓ |
| Release cadence | 75 | 0.08 | 6.1 | ✓ |
| Stars | 92 | 0.05 | 4.3 | ✓ |
| Security score | 68 | 0.05 | 3.7 | ✓ |
| Price level | 80 | 0.04 | 3.3 | ✓ |
| Integrations | 31 | 0.05 | 1.7 | ✓ |
| Pricing transparency | 25 | 0.05 | 1.4 | ✓ |
| Dependent projects | 5 | 0.05 | 0.3 | ✓ |
| Package downloads | 0 | 0.04 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 44 | mediumsource · 2026-10-05 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 8 items | highsource · 2026-07-30 · 92% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Hosting: both · Clustering: sharded · Data model: key_value · Deployment: managed · Consistency: strong · Persistence: append_log | mediumsource · 2026-10-05 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 11 | mediumsource · 2026-09-07 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | C | highsource · 2026-10-05 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | RSALv2 | highsource · 2026-07-30 · 85% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | mediumsource · 2026-10-05 · 50% |
Pricing
Release
Reliability
Security
| Attribute | Value | Evidence |
|---|---|---|
| Soc2 | Yes | highsource · 2026-10-05 · 75% |
| Disclosure policy | Yes | mediumsource · 2026-09-07 · 60% |
| Gdpr | Yes | highsource · 2026-10-05 · 75% |
| Hipaa | Yes | highsource · 2026-10-05 · 75% |
| Iso27001 | Yes | highsource · 2026-08-01 · 75% |
| Pci | Yes | highsource · 2026-10-05 · 75% |
| Scorecard | 6.8 | highsource · 2026-10-05 · 90% |
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fredis%2Fredis&per_page=100 · Last 12m: 0 | highsource · 2026-10-05 · 90% |
| Trust center | https://redis.io/security/notice-apache-log4j2-cve-2021-44228/ | mediumsource · 2026-10-05 · 60% |
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