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Couchbase Server vs Redis

Couchbase Server: Memory-first distributed JSON database with SQL++, search, vector indexes and mobile sync. Redis: The in-memory data structure server that became the default cache, now with search, JSON and vectors built in.

key differences

  • Couchbase Server is primarily a document database; Redis is key-value.
  • Licensing: Couchbase Server is source-available (Business Source License 1.1 (source); commercial Enterprise Edition); Redis is open source (copyleft) (Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+)).
  • Couchbase Server is built for larger datasets (≤ 1 PB) than Redis (≤ 10 TB).
  • Transactions: Couchbase Server offers full ACID; Redis offers limited.
  • Only Couchbase Server has joins, change data capture, triggers, compression, encryption at rest.
  • Only Redis has stored procedures, pub/sub, streaming ingest.

choose couchbase for

  • +User profiles and session stores at high concurrency
  • +Travel, retail and gaming backends with strict latency SLAs
  • +Offline-first mobile and edge apps with Couchbase Lite
  • +Caching layer that also persists and can be queried

best at · OLTP, Cache, Sessions

choose redis for

  • +Application and database query caching
  • +Session storage and user tokens
  • +Rate limiting and distributed locks
  • +Leaderboards and counters

best at · Cache, Sessions, Queue

Couchbase ServerMemory-first distributed JSON database with SQL++, search, vector indexes and mobile sync.
RedisThe in-memory data structure server that became the default cache, now with search, JSON and vectors built in.
overview
Primary model
Document
Key-Value
Also supports
Key-Value, Search Engine, Vector, Spatial
Document, Vector, Time-Series, Search Engine
Type
Database engine
Database engine
Status
Active
Active
Developer
Couchbase, Inc.
Redis Ltd.
First release
2010
2009
Latest version
8.0.3 (Sep 2026)
8.10.3 (Oct 26, 2026)
License
Source-availableBusiness Source License 1.1 (source); commercial Enterprise Edition
Open source (copyleft)Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+)
Free tier
✓
✓
popularity
WhichDB Score
27.5
84.3
Rank
#101
#2
GitHub stars
–
77.1K
Stack Overflow questions
4.1K
25.4K
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
Native
Multi-region
Active active
Active active
ACID
Full
Limited
Consistency
Strong, Eventual
Eventual
Schema
Flexible
Schemaless
Architecture
Distributed, Multi primary, In memory
In memory, Single node, Primary replica, Distributed, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
✓
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
AWS, Google Cloud, Azure
AWS, Google Cloud, Azure, DigitalOcean, Heroku, Render
capabilities
Transactions
✓
✓
Joins
✓
—
Secondary indexes
✓
✓
Full-text search
✓
✓
Vector search
✓
✓
Geospatial
✓
✓
JSON
✓
✓
Change data capture
✓
—
Triggers
✓
—
Stored procedures
—
✓
Materialized views
—
—
TTL / expiry
✓
✓
Pub/Sub
—
✓
Columnar storage
—
—
In-memory
✓
✓
Durable persistence
✓
✓
Compression
✓
—
Encryption at rest
✓
—
Role-based access
✓
✓
Time travel
—
—
Branching
—
—
Online schema changes
✓
—
Streaming ingest
—
✓
Offline sync
✓
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL++ (N1QL), Full Text Search query DSL
Redis commands (RESP), Lua, Redis Query Engine (FT.*)
Client languages
C, C#, Go, Java, Kotlin, JavaScript, PHP, Python
Python, Java, JavaScript, Go, C#, Rust, Ruby, PHP
Best for
OLTP, Cache, Sessions, Search
Cache, Sessions, Queue, Pub/Sub
Add more to this comparisonNot sure either fits? Try smart match

Couchbase Server vs Redis: FAQ

What is the difference between Couchbase Server and Redis?

Couchbase Server: Memory-first distributed JSON database with SQL++, search, vector indexes and mobile sync. Redis: The in-memory data structure server that became the default cache, now with search, JSON and vectors built in. Couchbase Server is primarily a document database; Redis is key-value. Licensing: Couchbase Server is source-available (Business Source License 1.1 (source); commercial Enterprise Edition); Redis is open source (copyleft) (Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+)). Couchbase Server is built for larger datasets (≤ 1 PB) than Redis (≤ 10 TB).

When should I choose Couchbase Server over Redis?

Choose Couchbase Server for user profiles and session stores at high concurrency; travel, retail and gaming backends with strict latency SLAs; and offline-first mobile and edge apps with Couchbase Lite. Choose Redis for application and database query caching; session storage and user tokens; and rate limiting and distributed locks.

Is Couchbase Server or Redis more popular?

Redis ranks #2 on the WhichDB Score (84.3/100) and Couchbase Server ranks #101 (27.5/100). Popularity is not fit: check the requirements that matter for your project.

Are Couchbase Server and Redis open source?

Not in the OSI sense. Couchbase Server is source-available: you can read the code, but the license restricts some uses, typically offering it as a competing managed service. License: Business Source License 1.1 (source); commercial Enterprise Edition. Yes. Redis is open source. License: Tri-license: AGPLv3, RSALv2 or SSPLv1 (Redis 8+).