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Cassandra vs RavenDB

Cassandra logo

Cassandra

Software

Manage massive amounts of data with linear scalability

From
Free
Rated
-
Full reviewWebsite
RavenDB logo

RavenDB

Software

The fully transactional NoSQL document database

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cassandra no support for joins across tables; RavenDB the free Developer licence bars commercial use and expires every 6 months, requiring renewal
  • They diverge on capability: Cassandra covers Linear Scalability, RavenDB covers ACID Transactions.

Where they differ

Only the attributes on which Cassandra and RavenDB actually diverge.

Attributes where Cassandra and RavenDB differ
AttributeCassandraRavenDB
Pricing modelUnknownfreemium
PlatformsLinux, macOS, Windows, Docker, KubernetesLinux, Windows, Mac, Docker, Web
Founded20082010

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 RavenDB

  • ACID Transactions
  • Auto-indexing
  • Full-text Search
  • Graph Queries
  • Distributed Counters
  • Time Series
  • Document Compression
  • .NET

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 RavenDB
  • Content managementnot RavenDB
  • User profilesnot RavenDB
  • Mobile backendsnot RavenDB
  • Cachingnot RavenDB

RavenDB

  • Running a distributed document database with ACID transactionsnot Cassandra
  • Self hosting a multi node database cluster on your own hardwarenot Cassandra
  • Replicating operational data out to analytics systems through ETLnot 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

RavenDB

  • The free Developer licence bars commercial use and expires every 6 months, requiring renewal
  • The free Community licence caps a customer at 60 cores and forces you to stay on the latest major version
  • The Professional licence is limited to a single database, a 5 node cluster, 40 cores and 240 GB RAM
  • Sharding across nodes, ETL to OLAP, Elasticsearch and Kafka, and data archival are Enterprise only
  • Enterprise and AI licence pricing is contact us only with no published rate

Pricing, plan by plan

Cassandra

Free

No published plan breakdown. See the Cassandra review.

RavenDB

Free
  • CommunityFree
    • 3 cores
    • 6GB RAM
    • Community support
  • Professional$499/year
    • Production use
    • Professional support
    • Advanced features

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.
Cassandra review

Choose RavenDB if

  • You need acid transactions.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Docker, Web.
  • You also want auto-indexing.
RavenDB review

Questions people ask

Is Cassandra or RavenDB better?
Neither clearly leads. Cassandra starts at Free and RavenDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cassandra or RavenDB?
Cassandra starts at Free and RavenDB at Free.
Does Cassandra or RavenDB run on more platforms?
Cassandra runs on Linux, macOS, Windows, Docker, Kubernetes. RavenDB 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 RavenDB is typically brought in for.
What can Cassandra do that RavenDB cannot?
Cassandra covers Linear Scalability, Fault Tolerance, Multi-datacenter Replication, Tunable Consistency. RavenDB covers ACID Transactions, Auto-indexing, Full-text Search, Graph Queries. 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.

Source
Cassandra: 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.

Source
Cassandra: 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.

Source
Cassandra: 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.

Source
Cassandra: 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
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