Software · head to head
Cassandra vs Couchbase
Cassandra
Software
Manage massive amounts of data with linear scalability
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Cassandra no support for joins across tables; Couchbase the free tier is a single node with 8 GB of storage and forum support only
- They diverge on capability: Cassandra covers Linear Scalability, Couchbase covers JSON Document Model.
Where they differ
Only the attributes on which Cassandra and Couchbase actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Cassandra
- Linear Scalability
- Fault Tolerance
- Multi-datacenter Replication
- Tunable Consistency
- CQL Query Language
- Distributed Architecture
- No Single Point of Failure
- DataStax
Only in Couchbase
- JSON Document Model
- SQL++ Query
- Full-text Search
- Eventing
- Analytics
- Mobile Sync
- Multi-dimensional Scaling
- Kafka
Both cover
- Linux support
- Windows support
- Mac support
- Docker support
What people use each for
The jobs each tool is most often brought in to do.
Cassandra
- Real-time applicationsnot Couchbase
- Content managementnot Couchbase
- User profilesnot Couchbase
- Mobile backendsnot Couchbase
- Cachingnot Couchbase
Couchbase
- Running a distributed NoSQL document database as a managed servicenot Cassandra
- Mobile sync and offline first applications backed by a cloud databasenot Cassandra
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Cassandra
- No support for joins across tables
- No ACID transactions across multiple rows
- Data model must be designed around query patterns upfront, making schema evolution difficult
- Partition key misconfigurations can cause uneven data distribution and hotspots that degrade performance
Couchbase
- The free tier is a single node with 8 GB of storage and forum support only
- Node rates are hourly and quoted as starting figures, from $0.15 an hour on Basic to $0.49 on Enterprise
- The Developer Pro and Enterprise plans require 3 nodes, so the hourly rate multiplies before any usage
- Backup storage is billed separately at $0.07 per GB a month, and analytics backups at $0.14
- Support response time is a plan feature, at 8 hours on Developer Pro against 30 minutes on Enterprise
- AI and analytics run as separately priced planes at up to $0.86 an hour per node
Pricing, plan by plan
Cassandra
FreeNo published plan breakdown. See the Cassandra review.
Couchbase
Free- CommunityFree
- Full features
- Community support
- Self-managed
- Capella FreeFree
- Managed service
- Limited resources
- Cloud hosted
Which should you pick?
Choose Cassandra if
- You need linear scalability.
- You want to start without paying.
- You work on Linux, macOS, Windows, Docker, Kubernetes.
- You also want fault tolerance.
Choose Couchbase if
- You need json document model.
- You want to start without paying.
- You work on Linux, Windows, Mac, Docker, Web.
- You also want sql++ query.
Questions people ask
- Is Cassandra or Couchbase better?
- Neither clearly leads. Cassandra starts at Free and Couchbase at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Cassandra or Couchbase?
- Cassandra starts at Free and Couchbase at Free.
- Does Cassandra or Couchbase run on more platforms?
- Cassandra runs on Linux, macOS, Windows, Docker, Kubernetes. Couchbase runs on Linux, Windows, Mac, Docker, Web.
- Can I use Cassandra for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Cassandra best used for?
- Cassandra is most often used for real-time applications, content management, user profiles, mobile backends. Of those, real-time applications and content management are not what Couchbase is typically brought in for.
- What can Cassandra do that Couchbase cannot?
- Cassandra covers Linear Scalability, Fault Tolerance, Multi-datacenter Replication, Tunable Consistency. Couchbase covers JSON Document Model, SQL++ Query, Full-text Search, Eventing. Both handle Linux support, Windows support, Mac support, Docker support.
Answered from the vendors’ own pages
Cassandra: Does Cassandra support joins between tables?
No. Cassandra does not support joins or foreign keys. The data model requires denormalization, meaning data must be duplicated across tables to support different query patterns.
SourceCassandra: Does Cassandra offer ACID transactions?
No. Cassandra provides only row-level atomicity and isolation, not full ACID transactions across multiple rows or tables. It uses lightweight transactions via Paxos for per-row compare-and-set operations.
SourceCassandra: What programming languages can connect to Cassandra?
Cassandra supports official drivers for multiple languages including Python, Java, Node.js, and Go, allowing applications to communicate via the native Cassandra protocol.
SourceCassandra: Can I deploy Cassandra in the cloud?
Yes. Cassandra can run on any cloud platform (AWS, Google Cloud, Azure) via Docker, virtual machines, or managed services like DataStax Astra DB, which provides a fully managed DBaaS option.
SourceCassandra: Does Cassandra have a free option?
The open source Apache Cassandra is free. DataStax also offers Astra DB with a free tier providing up to 25GB storage and 25 million read/write operations per month.
Source