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Databases · head to head

Apache Flink vs Hasura

Apache Flink logo

Apache Flink

Databases

Stateful stream processing at scale

From
Free
Rated
-
Full reviewWebsite
Hasura logo

Hasura

APIs

GraphQL engine that instantly creates production-ready GraphQL API from databases

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Apache Flink genuinely difficult: event time, watermarks and state backends are a real conceptual load before anything works; Hasura active model definition: model/command accessed more than 1,000 times monthly
  • They diverge on capability: Apache Flink covers Event-time processing, Hasura covers GraphQL API.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Apache Flink and Hasura actually diverge.

Attributes where Apache Flink and Hasura differ
AttributeApache FlinkHasura
Pricing modelOpen source, no licence fee; managed services billed separatelyfreemium
PlatformsLinux, Kubernetes, Docker, Self-hostedWeb
CategoryDatabasesAPIs
FoundedUnknown2017

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 Apache Flink

  • Event-time processing
  • Exactly-once state
  • Batch and stream
  • SQL interface

Only in Hasura

  • GraphQL API
  • Real-time subscriptions
  • Access control
  • PostgreSQL
  • MySQL
  • Webhooks
  • REST APIs
  • Cloud support

What people use each for

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

Apache Flink

  • Real-time aggregations and dashboards computed over an event streamnot Hasura
  • Fraud and anomaly detection where patterns span a time windownot Hasura
  • Joining two live streams where events arrive out of ordernot Hasura

Hasura

  • Automatic GraphQL API generation from existing databasesnot Apache Flink
  • Real-time data subscriptions for modern applicationsnot Apache Flink
  • Backend infrastructure for web and mobile applicationsnot Apache Flink
  • Event-triggered webhooks for database changesnot Apache Flink

Where each one falls short

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

Apache Flink

  • Genuinely difficult: event time, watermarks and state backends are a real conceptual load before anything works
  • Operationally heavy — job managers, task managers, checkpoint storage and state size are all yours to run and tune
  • State grows with the workload, and large state changes recovery time and cost significantly
  • Overkill where a scheduled batch job would answer the same question

Hasura

  • Active model definition: model/command accessed more than 1,000 times monthly
  • Private DDN requires Base or Advanced plan

Pricing, plan by plan

Apache Flink

Free
  • Apache FlinkFree
    • Full functionality
    • Self-hosted
    • No usage limits

Hasura

Free
  • DDN FreeFree
    • Unlimited models
    • 1 supergraph developer
    • 15-minute observability retention
  • DDN Base$5/month
    • Per active model billing
    • Unlimited developers
    • 30-day observability retention
  • DDN Advanced$30/month
    • Per active model billing
    • Federated collaboration
    • Multi-repo CI/CD

Which should you pick?

Choose Apache Flink if

  • You need event-time processing.
  • You want to start without paying.
  • You work on Linux, Kubernetes, Docker, Self-hosted.
  • You also want exactly-once state.
Apache Flink review

Choose Hasura if

  • You need graphql api.
  • You want to start without paying.
  • You also want real-time subscriptions.
Hasura review

Questions people ask

Is Apache Flink or Hasura better?
Neither clearly leads. Apache Flink starts at Free and Hasura at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apache Flink or Hasura?
Apache Flink starts at Free and Hasura at Free.
Does Apache Flink or Hasura run on more platforms?
Apache Flink runs on Linux, Kubernetes, Docker, Self-hosted. Hasura runs on Web.
Can I use Apache Flink for free?
Both have a free tier, so you can try either at no cost before committing.
What is Apache Flink best used for?
Apache Flink is most often used for real-time aggregations and dashboards computed over an event stream, fraud and anomaly detection where patterns span a time window, joining two live streams where events arrive out of order. Of those, real-time aggregations and dashboards computed over an event stream and fraud and anomaly detection where patterns span a time window are not what Hasura is typically brought in for.
What can Apache Flink do that Hasura cannot?
Apache Flink covers Event-time processing, Exactly-once state, Batch and stream, SQL interface. Hasura covers GraphQL API, Real-time subscriptions, Access control, PostgreSQL.

Answered from the vendors’ own pages

Apache Flink: Is Apache Flink free?

Yes, open source under the Apache Software Foundation. Managed services such as Amazon Managed Service for Apache Flink are billed separately.

Hasura: How much does Hasura cost?

Hasura DDN Free is free. DDN Base starts at $5/active model/month, and DDN Advanced starts at $30/active model/month.

Source
Apache Flink: Flink or Kafka?

They are complementary rather than alternatives. Kafka moves and stores events; Flink computes over them with windowing, joins and durable state.

Hasura: What is an active model in Hasura pricing?

An active model is defined as any model or command accessed more than 1,000 times monthly.

Source
Apache Flink: What is event-time processing?

Computing based on when an event actually occurred rather than when it arrived. It is what makes results correct when data is late or out of order, and it is the main reason Flink is harder than it looks.

Hasura: Is there a free version of Hasura?

Yes, Hasura DDN Free is always free and includes unlimited models, 1 supergraph developer, and 15-minute observability retention.

Source
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