Software · head to head
PostgreSQL vs DataStax
PostgreSQL
Software
The world's most advanced open source relational database
- From
- Free
- Rated
- -
The short version
- Each has a real cost: PostgreSQL requires manual scaling across multiple machines for very large deployments; DataStax dataStax's own Astra DB documentation states the Enterprise plan is an annual, contract-based plan with negotiated pricing, meaning list prices are not published for that tier
- They diverge on capability: PostgreSQL covers ACID Compliance, DataStax covers Cassandra Compatible.
Where they differ
Only the attributes on which PostgreSQL and DataStax actually diverge.
| Attribute | PostgreSQL | DataStax |
|---|---|---|
| Pricing model | Unknown | freemium |
| Platforms | Linux, Windows, macOS, BSD, Unix | Web, Aws, Azure, Gcp |
| Founded | 1996 | 2010 |
Identical on both: starting price (Free), free tier (Yes), 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 PostgreSQL
- ACID Compliance
- JSON/JSONB Support
- Full-text Search
- Extensibility
- Advanced Indexing
- Partitioning
- Replication
- pgAdmin
Only in DataStax
- Cassandra Compatible
- Vector Search
- Serverless
- Multi-cloud
- Streaming
- CDC
- GraphQL API
- LangChain
What people use each for
The jobs each tool is most often brought in to do.
PostgreSQL
- Transaction processingnot DataStax
- Data storagenot DataStax
- Application backendnot DataStax
- Reportingnot DataStax
- Data analyticsnot DataStax
DataStax
- Real-time applicationsnot PostgreSQL
- Content managementnot PostgreSQL
- User profilesnot PostgreSQL
- Mobile backendsnot PostgreSQL
- Cachingnot PostgreSQL
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
DataStax
- DataStax's own Astra DB documentation states the Enterprise plan is an annual, contract-based plan with negotiated pricing, meaning list prices are not published for that tier
- DataStax's Astra DB documentation directs Standard plan customers to IBM's watsonx.data pricing for exact consumption-based rates following the DataStax/IBM deal, rather than publishing them on DataStax's own site
Pricing, plan by plan
PostgreSQL
FreeNo published plan breakdown. See the PostgreSQL review.
DataStax
Free- FreeFree
- 5GB storage
- 40M read/write ops
- Vector search
- Pay As You GoFree
- Usage-based pricing
- Multi-region
- Enterprise support
Which should you pick?
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.
Choose DataStax if
- You need cassandra compatible.
- You want to start without paying.
- You work on Web, Aws, Azure, Gcp.
- You also want vector search.
Questions people ask
- Is PostgreSQL or DataStax better?
- Neither clearly leads. PostgreSQL starts at Free and DataStax at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, PostgreSQL or DataStax?
- PostgreSQL starts at Free and DataStax at Free.
- Does PostgreSQL or DataStax run on more platforms?
- PostgreSQL runs on Linux, Windows, macOS, BSD, Unix. DataStax runs on Web, Aws, Azure, Gcp.
- Can I use PostgreSQL for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is PostgreSQL best used for?
- PostgreSQL is most often used for transaction processing, data storage, application backend, reporting. Of those, transaction processing and data storage are not what DataStax is typically brought in for.
- What can PostgreSQL do that DataStax cannot?
- PostgreSQL covers ACID Compliance, JSON/JSONB Support, Full-text Search, Extensibility. DataStax covers Cassandra Compatible, Vector Search, Serverless, Multi-cloud.
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.
SourcePostgreSQL: 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.
SourcePostgreSQL: 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.
SourcePostgreSQL: 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.
SourcePostgreSQL: 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