Is QuestDB or Valkey better?

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

Which is cheaper, QuestDB or Valkey?

QuestDB starts at Free and Valkey at Free.

Does QuestDB or Valkey run on more platforms?

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

Can I use QuestDB for free?

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

What is QuestDB best used for?

QuestDB is most often used for time-series analytics ingesting up to 20m rows/second from iot sensors or financial data feeds, real-time dashboarding with 32ms time-to-first-row latency for minute-level analytics, applications requiring multi-tier storage (hot ingest, real-time sql, cold parquet archive). Of those, time-series analytics ingesting up to 20m rows/second from iot sensors or financial data feeds and real-time dashboarding with 32ms time-to-first-row latency for minute-level analytics are not what Valkey is typically brought in for.

What can QuestDB do that Valkey cannot?

QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization. Valkey covers Redis-compatible, BSD licensed, Rich data structures, Replication and persistence.

Databases · head to head

QuestDB vs Valkey

QuestDB

Databases

Fast open source time-series database for high throughput ingestion

From: Free
Rated: -

Full review Website

Valkey

Databases

Open-source in-memory data store forked from Redis

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: QuestDB open-source edition lacks high-availability, distributed architecture, and enterprise security features; Valkey younger project, so its track record is short even though the codebase is not
They diverge on capability: QuestDB covers High Throughput Ingestion, Valkey covers Redis-compatible.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which QuestDB and Valkey actually diverge.

Attributes where QuestDB and Valkey differ
Attribute	QuestDB	Valkey
Pricing model	open-source	Open source, no licence fee; managed cloud billed separately
Platforms	Docker, Kubernetes, Cloud (AWS, Azure, GCP)	Linux, macOS, Docker, Self-hosted
Founded	2014	Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Databases).

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 QuestDB

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

Only in Valkey

Redis-compatible
BSD licensed
Rich data structures
Replication and persistence

What people use each for

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

QuestDB

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

Valkey

Continuing on a permissively licensed in-memory store after the Redis licence changenot QuestDB
Caching and session storage where a foundation-governed project is a procurement requirementnot QuestDB
Migrating from Redis without rewriting application codenot QuestDB

Where each one falls short

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

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

Valkey

Younger project, so its track record is short even though the codebase is not
Divergence from Redis grows over time, so compatibility is strongest near the fork point and weakens as both evolve
Ecosystem tooling and documentation still frequently assume Redis, leaving translation work

Pricing, plan by plan

QuestDB

Free

No published plan breakdown. See the QuestDB review.

Valkey

Free

ValkeyFree
- Full functionality
- Self-hosted
- No usage limits

Which should you pick?

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

Choose Valkey if

You need redis-compatible.
You want to start without paying.
You work on Linux, macOS, Docker, Self-hosted.
You also want bsd licensed.

Valkey review

Questions people ask

Is QuestDB or Valkey better?: Neither clearly leads. QuestDB starts at Free and Valkey at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, QuestDB or Valkey?: QuestDB starts at Free and Valkey at Free.
Does QuestDB or Valkey run on more platforms?: QuestDB runs on Docker, Kubernetes, Cloud (AWS, Azure, GCP). Valkey runs on Linux, macOS, Docker, Self-hosted.
Can I use QuestDB for free?: Both have a free tier, so you can try either at no cost before committing.
What is QuestDB best used for?: QuestDB is most often used for time-series analytics ingesting up to 20m rows/second from iot sensors or financial data feeds, real-time dashboarding with 32ms time-to-first-row latency for minute-level analytics, applications requiring multi-tier storage (hot ingest, real-time sql, cold parquet archive). Of those, time-series analytics ingesting up to 20m rows/second from iot sensors or financial data feeds and real-time dashboarding with 32ms time-to-first-row latency for minute-level analytics are not what Valkey is typically brought in for.
What can QuestDB do that Valkey cannot?: QuestDB covers High Throughput Ingestion, SQL Support, Time-series Optimization, SIMD Vectorization. Valkey covers Redis-compatible, BSD licensed, Rich data structures, Replication and persistence.

Answered from the vendors’ own pages

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

Valkey: Is Valkey free?

Yes, BSD-licensed open source under the Linux Foundation.

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

Valkey: Why does Valkey exist?

Redis changed its licence away from BSD in 2024. Valkey is the community fork continuing under permissive terms, backed by AWS, Google Cloud and Oracle among others.

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

Valkey: Can I switch from Redis to Valkey?

At the fork point it is drop-in compatible with existing clients and data. The further both projects move from that point, the more you should verify the specific features you use.

QuestDB vs Valkey

QuestDB

Valkey

The short version

Where they differ

What each one covers

Only in QuestDB

Only in Valkey

What people use each for

QuestDB

Valkey

Where each one falls short

QuestDB

Valkey

Pricing, plan by plan

QuestDB

Valkey

Which should you pick?

Choose QuestDB if

Choose Valkey if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on QuestDB

More on Valkey

Keep looking

Other head to heads