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Apache Cassandra vs Oracle NoSQL Database

Apache Cassandra: Masterless wide-column database built for always-on writes across data centers. Oracle NoSQL Database: Oracle's sharded key-value and JSON store, available as Apache-licensed software or an OCI service.

key differences

  • Apache Cassandra is primarily a wide-column database; Oracle NoSQL Database is key-value.
  • Apache Cassandra is built for larger datasets (Multi-PB) than Oracle NoSQL Database (≤ 1 PB).
  • Only Apache Cassandra has vector search, triggers, compression, streaming ingest.
  • Only Oracle NoSQL Database has transactions, joins, geospatial.
  • Oracle NoSQL Database has a serverless option; Apache Cassandra does not.

choose apache-cassandra for

  • +Write-heavy event and telemetry ingestion
  • +Messaging and activity feeds
  • +Multi-region user and device data
  • +Time-series with TTL-based expiry

best at · OLTP, Time-series, IoT

choose oracle-nosql for

  • +Low-latency profile and session stores on OCI
  • +IoT ingestion with TTL-based expiry
  • +Oracle-centric architectures needing a NoSQL tier

best at · OLTP, IoT, Sessions

Apache CassandraMasterless wide-column database built for always-on writes across data centers.
Oracle NoSQL DatabaseOracle's sharded key-value and JSON store, available as Apache-licensed software or an OCI service.
overview
Primary model
Wide-Column
Key-Value
Also supports
Key-Value, Vector
Document, Wide-Column, Spatial
Type
Database engine
Database engine
Status
Active
Active
Developer
Apache Software Foundation
Oracle
First release
2008
2011
Latest version
5.0.9 (Jul 2026)
25.3.24 (Jun 2, 2026)
License
Open source (permissive)Apache License 2.0
Open source (permissive)Apache 2.0 (Community Edition); commercial Enterprise Edition
Free tier
✓
✓
popularity
WhichDB Score
55.9
13.7
Rank
#20
#248
GitHub stars
10.1K
58
Stack Overflow questions
20.9K
95
scale & guarantees
Comfortable data size
Massive (Multi-PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
Active active
Active active
ACID
Limited
Limited
Consistency
Tunable, Eventual
Tunable
Schema
Strict
Flexible
Architecture
Distributed, Multi primary, Client server
Distributed, Client server, Serverless
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
✓
Serverless
—
✓
Embedded
—
—
Edge
—
—
Clouds
AWS, Google Cloud, Azure, IBM Cloud
Oracle Cloud
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
CQL
Oracle NoSQL SQL
Client languages
Java, Python, JavaScript, Go, C#, C++, Rust, Ruby
Java, Python, JavaScript, Go, C#, Rust
Best for
OLTP, Time-series, IoT, Observability
OLTP, IoT, Sessions, Metadata
Add more to this comparisonNot sure either fits? Try smart match

Apache Cassandra vs Oracle NoSQL Database: FAQ

What is the difference between Apache Cassandra and Oracle NoSQL Database?

Apache Cassandra: Masterless wide-column database built for always-on writes across data centers. Oracle NoSQL Database: Oracle's sharded key-value and JSON store, available as Apache-licensed software or an OCI service. Apache Cassandra is primarily a wide-column database; Oracle NoSQL Database is key-value. Apache Cassandra is built for larger datasets (Multi-PB) than Oracle NoSQL Database (≤ 1 PB). Only Apache Cassandra has vector search, triggers, compression, streaming ingest.

When should I choose Apache Cassandra over Oracle NoSQL Database?

Choose Apache Cassandra for write-heavy event and telemetry ingestion; messaging and activity feeds; and multi-region user and device data. Choose Oracle NoSQL Database for low-latency profile and session stores on OCI; IoT ingestion with TTL-based expiry; and oracle-centric architectures needing a NoSQL tier.

Is Apache Cassandra or Oracle NoSQL Database more popular?

Apache Cassandra ranks #20 on the WhichDB Score (55.9/100) and Oracle NoSQL Database ranks #248 (13.7/100). Popularity is not fit: check the requirements that matter for your project.

Are Apache Cassandra and Oracle NoSQL Database open source?

Yes. Apache Cassandra is open source. License: Apache License 2.0. Yes. Oracle NoSQL Database is open source. License: Apache 2.0 (Community Edition); commercial Enterprise Edition.