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Databases · head to head

Cassandra vs Cortex

Cassandra logo

Cassandra

Databases

Manage massive amounts of data with linear scalability

From
Free
Free plan
Yes
Visit CassandraFull review
Cortex logo

Cortex

Developer Tools

Internal developer portal that scores service ownership and maturity rather than just cataloguing services

From
On request
Free plan
No
Visit CortexFull review

The short version

  • Cassandra is free; Cortex prices on request.
  • Only Cassandra lists linear Scalability; only Cortex lists service catalogue.
  • Where Cassandra falls short: no support for joins across tables.
  • Prices and features on this page were last checked on 31 August 2026.

Where they differ

Only the attributes on which Cassandra and Cortex actually diverge.

Attributes where Cassandra and Cortex differ
AttributeCassandraCortex
Starting priceFreeOn request
Free tierYesNo
PlatformsLinux, macOS, Windows, Self-hostedWeb, API
CategoryDatabasesDeveloper Tools

Not yet recorded: pricing model for Cassandra, founded for Cortex.

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 Cortex

  • Service catalogue
  • Scorecards
  • Initiatives
  • Self-service templates
  • Query language
  • Eng intelligence
  • Integrations layer
  • On-call and ownership mapping

What people use each for

The jobs each tool is most often brought in to do.

Cassandra

  • Real-time applicationsnot Cortex
  • Content managementnot Cortex
  • User profilesnot Cortex
  • Mobile backendsnot Cortex
  • Cachingnot Cortex

Cortex

  • A platform team that needs to prove to leadership how far a Kubernetes or framework migration has actually progressed across hundreds of servicesnot Cassandra
  • An organisation where ownership of production services is genuinely unknown after reorganisations or acquisitionsnot Cassandra
  • Enforcing production readiness standards on new services at creation time rather than at incident reviewnot Cassandra
  • Replacing a self-hosted Backstage that is consuming a full-time engineer or two just to stay upgradednot 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

Cortex

  • Pricing is quote only, so a platform team cannot build a business case or compare against the true cost of self-hosted Backstage without entering a sales cycle first
  • The catalogue is only as accurate as the metadata you supply, so an organisation with inconsistent repository conventions spends its first quarter cleaning data before any scorecard means anything
  • Scorecards create political friction: publishing a per-team grade turns an engineering standard into a performance metric, and teams will game the rules rather than fix the underlying issue
  • It is closed source and hosted, so organisations with strict data residency or air-gap requirements have limited options compared with running Backstage themselves
  • Value scales with organisation size, so a company with fifty engineers and thirty services will find the catalogue tells them nothing they did not already know while still paying an enterprise contract

Pricing, plan by plan

Cassandra

Free

No published plan breakdown. See the Cassandra review.

Cortex

On request
  • CortexOn request
    • Service catalogue and ownership mapping
    • Scorecards and initiatives
    • Self-service templates

Which should you pick?

Choose Cassandra if

  • You need linear scalability.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Self-hosted.
  • You also want fault tolerance.
Cassandra review

Choose Cortex if

  • You need service catalogue.
  • You work on Web, API.
  • You also want scorecards.
Cortex review

Questions people ask

Is Cassandra or Cortex better?
Neither clearly leads. Cassandra starts at Free and Cortex at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cassandra or Cortex?
Cassandra has a free tier; the other does not. Paid plans start at Free for Cassandra and On request for Cortex.
Does Cassandra or Cortex run on more platforms?
Cassandra runs on Linux, macOS, Windows, Self-hosted. Cortex runs on Web, API.
Can I use Cassandra for free?
Yes. Cassandra has a free tier, so you can try it without paying. Cortex starts at On request.
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 Cortex is typically brought in for.
What can Cassandra do that Cortex cannot?
Cassandra covers Linear Scalability, Fault Tolerance, Multi-datacenter Replication, Tunable Consistency. Cortex covers Service catalogue, Scorecards, Initiatives, Self-service templates.

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
Cortex: How is Cortex different from Backstage?

Backstage is an open source framework you build and staff. Cortex is a hosted product with scorecards and initiatives out of the box and no platform team required to keep it running.

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
Cortex: Is pricing published?

No. Cortex requires a sales conversation and prepares a custom proposal.

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
Cortex: Can it self-host?

It is offered as a hosted product; on-premise arrangements are handled through sales rather than published.

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
Cortex: What is the main adoption risk?

Bad or missing service metadata. The catalogue and every scorecard on top of it inherit whatever quality your repositories already have.

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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