Is HAProxy or QuestDB better?

Neither clearly leads. HAProxy 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, HAProxy or QuestDB?

HAProxy starts at Free and QuestDB at Free.

Does HAProxy or QuestDB run on more platforms?

HAProxy runs on Linux, Docker, Kubernetes, Self-hosted. QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP).

Can I use HAProxy for free?

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

What is HAProxy best used for?

HAProxy is most often used for load balancing at traffic levels where proxy efficiency shows up in the hardware bill, precise traffic control — rate limits, sticky sessions, complex routing rules, tcp load balancing for databases and non-http services. Of those, load balancing at traffic levels where proxy efficiency shows up in the hardware bill and precise traffic control — rate limits, sticky sessions, complex routing rules are not what QuestDB is typically brought in for.

What can HAProxy do that QuestDB cannot?

HAProxy covers High throughput, Layer 4 and 7, Health checking, Rate limiting and ACLs. QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization.

Cloud · head to head

HAProxy vs QuestDB

HAProxy

Cloud

High-performance TCP and HTTP load balancer

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: HAProxy configuration syntax is dense and unforgiving, with a steep initial learning curve; QuestDB open-source edition lacks high-availability, distributed architecture, and enterprise security features
They diverge on capability: HAProxy covers High throughput, QuestDB covers High Throughput Ingestion.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which HAProxy and QuestDB actually diverge.

Attributes where HAProxy and QuestDB differ
Attribute	HAProxy	QuestDB
Pricing model	Open source, no licence fee	open-source
Platforms	Linux, Docker, Kubernetes, Self-hosted	Docker, Kubernetes, Cloud (AWS, Azure, GCP)
Category	Cloud	Databases
Founded	Unknown	2014

Identical on both: starting price (Free), 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 HAProxy

High throughput
Layer 4 and 7
Health checking
Rate limiting and ACLs

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.

HAProxy

Load balancing at traffic levels where proxy efficiency shows up in the hardware billnot QuestDB
Precise traffic control — rate limits, sticky sessions, complex routing rulesnot QuestDB
TCP load balancing for databases and non-HTTP servicesnot QuestDB

QuestDB

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

Where each one falls short

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

HAProxy

Configuration syntax is dense and unforgiving, with a steep initial learning curve
No automatic certificate management, unlike newer servers that treat it as default behaviour
The built-in stats page is basic, so real observability needs exporters and dashboards
A dedicated load balancer is more machinery than small deployments need

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

HAProxy

Free

HAProxyFree
- Full functionality
- No usage limits
- Community support

QuestDB

Free

No published plan breakdown. See the QuestDB review.

Which should you pick?

Choose HAProxy if

You need high throughput.
You want to start without paying.
You work on Linux, Docker, Kubernetes, Self-hosted.
You also want layer 4 and 7.

HAProxy 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 HAProxy or QuestDB better?: Neither clearly leads. HAProxy 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, HAProxy or QuestDB?: HAProxy starts at Free and QuestDB at Free.
Does HAProxy or QuestDB run on more platforms?: HAProxy runs on Linux, Docker, Kubernetes, Self-hosted. QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP).
Can I use HAProxy for free?: Both have a free tier, so you can try either at no cost before committing.
What is HAProxy best used for?: HAProxy is most often used for load balancing at traffic levels where proxy efficiency shows up in the hardware bill, precise traffic control — rate limits, sticky sessions, complex routing rules, tcp load balancing for databases and non-http services. Of those, load balancing at traffic levels where proxy efficiency shows up in the hardware bill and precise traffic control — rate limits, sticky sessions, complex routing rules are not what QuestDB is typically brought in for.
What can HAProxy do that QuestDB cannot?: HAProxy covers High throughput, Layer 4 and 7, Health checking, Rate limiting and ACLs. QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization.

Answered from the vendors’ own pages

HAProxy: Is HAProxy free?

Yes, the community version is open source. HAProxy Technologies sells HAProxy Enterprise separately.

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

HAProxy: HAProxy or Nginx?

HAProxy is a specialist load balancer with deeper balancing and health-check features. Nginx also serves static content and is more approachable, which is why it is more common as a general web server.

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

HAProxy: Does HAProxy handle TLS certificates automatically?

No. Certificate issuance and renewal are external, unlike Caddy where it is automatic.

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

HAProxy vs QuestDB

HAProxy

QuestDB

The short version

Where they differ

What each one covers

Only in HAProxy

Only in QuestDB

What people use each for

HAProxy

QuestDB

Where each one falls short

HAProxy

QuestDB

Pricing, plan by plan

HAProxy

QuestDB

Which should you pick?

Choose HAProxy if

Choose QuestDB if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on HAProxy

More on QuestDB

Keep looking

Other head to heads