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Database & Data Management · head to head

Cassandra vs Elastic Stack

Cassandra logo

Cassandra

Database & Data Management

Manage massive amounts of data with linear scalability

From
Free
Rated
-
Full reviewWebsite
Elastic Stack logo

Elastic Stack

Log Management

Search, Observability, and Security Solutions

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Cassandra has a free tier, so it costs nothing to try first.
  • Each has a real cost: Cassandra no support for joins across tables; Elastic Stack self-managed deployment requires licensing based on node count and RAM usage
  • They diverge on capability: Cassandra covers Linear Scalability, Elastic Stack covers Full-text search.

Where they differ

Only the attributes on which Cassandra and Elastic Stack actually diverge.

Attributes where Cassandra and Elastic Stack differ
AttributeCassandraElastic Stack
Starting priceFreeOn request
Pricing modelUnknownsubscription
Free tierYesNo
PlatformsLinux, macOS, Windows, Docker, KubernetesCloud-hosted, Self-managed, Docker, Kubernetes (ECK)
CategoryDatabase & Data ManagementLog Management
Founded20082011

Identical on both: user rating (Not yet rated).

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 Elastic Stack

  • Full-text search
  • Log analytics
  • Security monitoring
  • Alerting
  • API
  • Webhooks
  • REST
  • Web support

What people use each for

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

Cassandra

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

Elastic Stack

  • Distributed search and analytics engine for production-scale workloadsnot Cassandra
  • Full-text search and vector search with approximate nearest neighbour supportnot Cassandra
  • Security event tracking with field-level and document-level access controlnot Cassandra
  • Machine learning capabilities including anomaly detection and forecastingnot 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

Elastic Stack

  • Self-managed deployment requires licensing based on node count and RAM usage
  • Serverless option has pending features including traffic filtering and bring-your-own-key encryption
  • Hosted deployment requires custom resource configuration for cluster management
  • Pricing models differ significantly across Hosted, Serverless, and Self-managed options

Pricing, plan by plan

Cassandra

Free

No published plan breakdown. See the Cassandra review.

Elastic Stack

On request

No published plan breakdown. See the Elastic Stack review.

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 Elastic Stack if

  • You need full-text search.
  • You work on Cloud-hosted, Self-managed, Docker, Kubernetes (ECK).
  • You also want log analytics.
Elastic Stack review

Questions people ask

Is Cassandra or Elastic Stack better?
Neither clearly leads. Cassandra starts at Free and Elastic Stack at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cassandra or Elastic Stack?
Cassandra has a free tier; the other does not. Paid plans start at Free for Cassandra and On request for Elastic Stack.
Does Cassandra or Elastic Stack run on more platforms?
Cassandra runs on Linux, macOS, Windows, Docker, Kubernetes. Elastic Stack runs on Cloud-hosted, Self-managed, Docker, Kubernetes (ECK).
Can I use Cassandra for free?
Yes. Cassandra has a free tier, so you can try it without paying. Elastic Stack 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 Elastic Stack is typically brought in for.
What can Cassandra do that Elastic Stack cannot?
Cassandra covers Linear Scalability, Fault Tolerance, Multi-datacenter Replication, Tunable Consistency. Elastic Stack covers Full-text search, Log analytics, Security monitoring, Alerting.

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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