Is Postgres or QuestDB better?

Neither clearly leads. Postgres starts at Free and QuestDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Postgres or QuestDB?

Postgres starts at Free and QuestDB at Free.

Does Postgres or QuestDB run on more platforms?

Postgres runs on Linux, Windows, Macos, Docker. QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP).

Can I use Postgres for free?

Both have a free tier, so you can try either at no cost before committing.

What is Postgres best used for?

Postgres is most often used for running a general purpose relational database for applications, self-hosting an open source sql database with no licence fee, workloads needing extensions, json and full text search in one engine. Of those, running a general purpose relational database for applications and self-hosting an open source sql database with no licence fee are not what QuestDB is typically brought in for.

What can Postgres do that QuestDB cannot?

Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers. QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization.

Technology · head to head

Postgres vs QuestDB

Postgres

Technology

The world's most advanced open source database

From: Free
Rated: -

Full review Website

QuestDB

Databases

Fast open source time-series database for high throughput ingestion

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Postgres each major version is supported for only 5 years after its initial release, after which it is end-of-life; QuestDB open-source edition lacks high-availability, distributed architecture, and enterprise security features
They diverge on capability: Postgres covers ACID compliance, QuestDB covers High Throughput Ingestion.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Postgres and QuestDB actually diverge.

Attributes where Postgres and QuestDB differ
Attribute	Postgres	QuestDB
Platforms	Linux, Windows, Macos, Docker	Docker, Kubernetes, Cloud (AWS, Azure, GCP)
Category	Technology	Databases
Founded	1996	2014

Identical on both: starting price (Free), pricing model (open-source), free tier (Yes), 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 Postgres

ACID compliance
Complex queries
Foreign keys
Triggers
Views
Stored procedures
JSON/JSONB support
Full-text search

Only in QuestDB

High Throughput Ingestion
SQL Support
Time-series Optimization
SIMD Vectorization
Column-oriented Storage
Built-in Web Console
InfluxDB Line Protocol
PostgreSQL

What people use each for

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

Postgres

Running a general purpose relational database for applicationsnot QuestDB
Self-hosting an open source SQL database with no licence feenot QuestDB
Workloads needing extensions, JSON and full text search in one enginenot QuestDB

QuestDB

Time-series analytics ingesting up to 20M rows/second from IoT sensors or financial data feedsnot Postgres
Real-time dashboarding with 32ms time-to-first-row latency for minute-level analyticsnot Postgres
Applications requiring multi-tier storage (hot ingest, real-time SQL, cold Parquet archive)not Postgres

Where each one falls short

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

Postgres

Each major version is supported for only 5 years after its initial release, after which it is end-of-life
Major version upgrades break on-disk compatibility and require a full dump and reload or the pg_upgrade tool
New major versions ship about once a year, so staying supported means a disruptive upgrade cycle
Minor releases contain only frequently-encountered bug fixes, low-risk fixes, security issues and data corruption fixes, so feature gaps are not addressed within a major version
There is no vendor SLA; commercial support must be bought separately from third party professional services listed by the project

QuestDB

Open-source edition lacks high-availability, distributed architecture, and enterprise security features
Enterprise edition pricing not published; requires contacting sales for custom quote
Ingestion limit of 20M rows/sec platform-dependent; may not scale to extreme throughput requirements

Pricing, plan by plan

Postgres

Free

Community EditionFree
- Full database features
- No limitations
- Community support

QuestDB

Free

No published plan breakdown. See the QuestDB review.

Which should you pick?

Choose Postgres if

You need acid compliance.
You want to start without paying.
You work on Linux, Windows, Macos, Docker.
You also want complex queries.

Postgres review

Choose QuestDB if

You need high throughput ingestion.
You want to start without paying.
You work on Docker, Kubernetes, Cloud (AWS, Azure, GCP).
You also want sql support.

QuestDB review

Questions people ask

Is Postgres or QuestDB better?: Neither clearly leads. Postgres starts at Free and QuestDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Postgres or QuestDB?: Postgres starts at Free and QuestDB at Free.
Does Postgres or QuestDB run on more platforms?: Postgres runs on Linux, Windows, Macos, Docker. QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP).
Can I use Postgres for free?: Both have a free tier, so you can try either at no cost before committing.
What is Postgres best used for?: Postgres is most often used for running a general purpose relational database for applications, self-hosting an open source sql database with no licence fee, workloads needing extensions, json and full text search in one engine. Of those, running a general purpose relational database for applications and self-hosting an open source sql database with no licence fee are not what QuestDB is typically brought in for.
What can Postgres do that QuestDB cannot?: Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers. QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization.

Answered from the vendors’ own pages

Postgres: How much does PostgreSQL cost to use?

PostgreSQL is completely free to download, install, and use. No licensing fees, subscription costs, or per-seat charges apply. The database is open source under the PostgreSQL License. Source: https://www.postgresql.org

Source

QuestDB: How much does QuestDB Enterprise cost?

QuestDB does not publish specific pricing for the Enterprise tier. Customers must contact QuestDB via their enterprise contact form to receive a custom quote.

Source

Postgres: Are there commercial PostgreSQL support options available?

Official PostgreSQL (the project) is free. Commercial PostgreSQL services such as hosting, professional support, training, and managed database services are offered by third-party vendors, not the PostgreSQL project itself. Source: https://www.postgresql.org

Source

QuestDB: Does QuestDB offer a free version?

Yes, QuestDB Open Source is completely free and recommended for evaluation, prototyping, and pilot projects. Enterprise features, high availability, security, and dedicated support require the paid Enterprise tier.

Source

Postgres: Do I need a license to use PostgreSQL commercially?

No. PostgreSQL is open source under the PostgreSQL License, which permits free commercial use without royalties, licensing fees, or support obligations. Source: https://www.postgresql.org

Source

QuestDB: What deployment options does QuestDB offer?

QuestDB offers open source deployment, Enterprise deployment, and Bring Your Own Cloud (BYOC) deployment. Pricing details for BYOC and Enterprise tiers are not published and require direct contact with sales.

Source

Postgres vs QuestDB

Postgres

QuestDB

The short version

Where they differ

What each one covers

Only in Postgres

Only in QuestDB

What people use each for

Postgres

QuestDB

Where each one falls short

Postgres

QuestDB

Pricing, plan by plan

Postgres

QuestDB

Which should you pick?

Choose Postgres if

Choose QuestDB if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Postgres

More on QuestDB

Keep looking

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