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Elastic Stack vs PostgreSQL

Elastic Stack logo

Elastic Stack

Software

Search, Observability, and Security Solutions

From
On request
Rated
-
Full reviewWebsite
PostgreSQL logo

PostgreSQL

Software

The world's most advanced open source relational database

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only PostgreSQL has a free tier, so it costs nothing to try first.
  • Each has a real cost: Elastic Stack self-managed deployment requires licensing based on node count and RAM usage; PostgreSQL requires manual scaling across multiple machines for very large deployments
  • They diverge on capability: Elastic Stack covers Full-text search, PostgreSQL covers ACID Compliance.

Where they differ

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

Attributes where Elastic Stack and PostgreSQL differ
AttributeElastic StackPostgreSQL
Starting priceOn requestFree
Pricing modelsubscriptionUnknown
Free tierNoYes
PlatformsCloud-hosted, Self-managed, Docker, Kubernetes (ECK)Linux, Windows, macOS, BSD, Unix
Founded20111996

Identical on both: 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 Elastic Stack

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

Only in PostgreSQL

  • ACID Compliance
  • JSON/JSONB Support
  • Full-text Search
  • Extensibility
  • Advanced Indexing
  • Partitioning
  • Replication
  • pgAdmin

What people use each for

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

Elastic Stack

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

PostgreSQL

  • Transaction processingnot Elastic Stack
  • Data storagenot Elastic Stack
  • Application backendnot Elastic Stack
  • Reportingnot Elastic Stack
  • Data analyticsnot Elastic Stack

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

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

PostgreSQL

  • Requires manual scaling across multiple machines for very large deployments
  • Performance tuning requires deep knowledge of database internals
  • No built-in graphical admin interface; command-line tools are primary method

Pricing, plan by plan

Elastic Stack

On request

No published plan breakdown. See the Elastic Stack review.

PostgreSQL

Free

No published plan breakdown. See the PostgreSQL review.

Which should you pick?

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

Choose PostgreSQL if

  • You need acid compliance.
  • You want to start without paying.
  • You work on Linux, Windows, macOS, BSD, Unix.
  • You also want json/jsonb support.
PostgreSQL review

Questions people ask

Is Elastic Stack or PostgreSQL better?
Neither clearly leads. Elastic Stack starts at On request and PostgreSQL at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Elastic Stack or PostgreSQL?
PostgreSQL has a free tier; the other does not. Paid plans start at On request for Elastic Stack and Free for PostgreSQL.
Does Elastic Stack or PostgreSQL run on more platforms?
Elastic Stack runs on Cloud-hosted, Self-managed, Docker, Kubernetes (ECK). PostgreSQL runs on Linux, Windows, macOS, BSD, Unix.
Can I use PostgreSQL for free?
Yes. PostgreSQL has a free tier, so you can try it without paying. Elastic Stack starts at On request.
What is Elastic Stack best used for?
Elastic Stack is most often used for distributed search and analytics engine for production-scale workloads, full-text search and vector search with approximate nearest neighbour support, security event tracking with field-level and document-level access control, machine learning capabilities including anomaly detection and forecasting. Of those, distributed search and analytics engine for production-scale workloads and full-text search and vector search with approximate nearest neighbour support are not what PostgreSQL is typically brought in for.
What can Elastic Stack do that PostgreSQL cannot?
Elastic Stack covers Full-text search, Log analytics, Security monitoring, Alerting. PostgreSQL covers ACID Compliance, JSON/JSONB Support, Full-text Search, Extensibility.

Answered from the vendors’ own pages

PostgreSQL: Is PostgreSQL completely free?

Yes. PostgreSQL is completely free and open source with no licensing fees or restrictions on use.

Source
PostgreSQL: What platforms does PostgreSQL run on?

PostgreSQL runs on all major operating systems including Linux, Windows, macOS, BSD, and commercial Unix variants, and has been proven highly scalable managing terabytes to petabytes of data.

Source
PostgreSQL: What procedural languages are supported?

PostgreSQL supports stored functions and procedures in multiple languages including PL/pgSQL, Perl, Python, Tcl, Java, JavaScript, R, and Rust.

Source
PostgreSQL: What is ACID compliance in PostgreSQL?

PostgreSQL has been ACID-compliant since 2001, ensuring data integrity through atomicity, consistency, isolation, and durability guarantees for all transactions.

Source
PostgreSQL: Does PostgreSQL support JSON data?

Yes. PostgreSQL supports JSON and JSONB data types for storing and querying JSON documents, along with XML and other document formats.

Source
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