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Apache Cassandra vs Manhattan

Apache Cassandra: Masterless wide-column database built for always-on writes across data centers. Manhattan: Twitter's in-house, multi-tenant, eventually consistent key-value store with pluggable storage engines.

key differences

  • Apache Cassandra is primarily a wide-column database; Manhattan is key-value.
  • Licensing: Apache Cassandra is open source (permissive) (Apache License 2.0); Manhattan is proprietary (Proprietary (internal only)).
  • Only Apache Cassandra has secondary indexes, vector search, json, change data capture, triggers.

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 manhattan for

  • +Reference design for multi-tenant, multi-datacenter key-value platforms
  • +Studying pluggable storage engines and replica reconciliation

best at · OLTP, Time-series

Apache CassandraMasterless wide-column database built for always-on writes across data centers.
ManhattanTwitter's in-house, multi-tenant, eventually consistent key-value store with pluggable storage engines.
overview
Primary model
Wide-Column
Key-Value
Also supports
Key-Value, Vector
Time-Series
Type
Database engine
Database engine
Status
Active
Active
Developer
Apache Software Foundation
Twitter (now X Corp.)
First release
2008
2012
Latest version
5.0.9 (Jul 2026)
–
License
Open source (permissive)Apache License 2.0
ProprietaryProprietary (internal only)
Free tier
✓
—
popularity
WhichDB Score
55.9
0.0
Rank
#20
#775
GitHub stars
10.1K
–
Stack Overflow questions
20.9K
–
scale & guarantees
Comfortable data size
Massive (Multi-PB)
Massive (Multi-PB)
Horizontal scaling
Native
Native
Multi-region
Active active
Active active
ACID
Limited
Limited
Consistency
Tunable, Eventual
Eventual, Strong
Schema
Strict
Schemaless
Architecture
Distributed, Multi primary, Client server
Distributed, Multi primary
deployment
Self-hosted
✓
—
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
AWS, Google Cloud, Azure, IBM 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
Key-value API
Client languages
Java, Python, JavaScript, Go, C#, C++, Rust, Ruby
–
Best for
OLTP, Time-series, IoT, Observability
OLTP, Time-series
Add more to this comparisonNot sure either fits? Try smart match

Apache Cassandra vs Manhattan: FAQ

What is the difference between Apache Cassandra and Manhattan?

Apache Cassandra: Masterless wide-column database built for always-on writes across data centers. Manhattan: Twitter's in-house, multi-tenant, eventually consistent key-value store with pluggable storage engines. Apache Cassandra is primarily a wide-column database; Manhattan is key-value. Licensing: Apache Cassandra is open source (permissive) (Apache License 2.0); Manhattan is proprietary (Proprietary (internal only)). Only Apache Cassandra has secondary indexes, vector search, json, change data capture, triggers.

When should I choose Apache Cassandra over Manhattan?

Choose Apache Cassandra for write-heavy event and telemetry ingestion; messaging and activity feeds; and multi-region user and device data. Choose Manhattan for reference design for multi-tenant, multi-datacenter key-value platforms; and studying pluggable storage engines and replica reconciliation.

Is Apache Cassandra or Manhattan more popular?

Apache Cassandra ranks #20 on the WhichDB Score (55.9/100) and Manhattan ranks #775 (0.0/100). Popularity is not fit: check the requirements that matter for your project.

Are Apache Cassandra and Manhattan open source?

Yes. Apache Cassandra is open source. License: Apache License 2.0. No. Manhattan is proprietary, closed-source software.