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Databases · head to head

Apache Flink vs Strapi

Apache Flink logo

Apache Flink

Databases

Stateful stream processing at scale

From
Free
Rated
-
Full reviewWebsite
Strapi logo

Strapi

APIs

Headless CMS with REST and GraphQL APIs

From
$35/month
Rated
-
Full reviewWebsite

The short version

  • Only Apache Flink has a free tier, so it costs nothing to try first.
  • Each has a real cost: Apache Flink genuinely difficult: event time, watermarks and state backends are a real conceptual load before anything works; Strapi cloud pricing is per project, not per account, so a second project doubles the bill
  • They diverge on capability: Apache Flink covers Event-time processing, Strapi covers REST API.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Apache Flink and Strapi differ
AttributeApache FlinkStrapi
Starting priceFree$35/month
Pricing modelOpen source, no licence fee; managed services billed separatelysubscription
Free tierYesNo
PlatformsLinux, Kubernetes, Docker, Self-hostedNode.js, Cloud, Self-hosted, Docker
CategoryDatabasesAPIs
FoundedUnknown2015

Identical on both: 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 Strapi

  • REST API
  • GraphQL API
  • Content management
  • PostgreSQL
  • MySQL
  • MongoDB
  • AWS
  • Webhooks

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 Strapi
  • Fraud and anomaly detection where patterns span a time windownot Strapi
  • Joining two live streams where events arrive out of ordernot Strapi

Strapi

  • Running a self hosted headless CMS with a REST or GraphQL APInot Apache Flink
  • Giving editors a content admin panel over a custom content modelnot 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

Strapi

  • Cloud pricing is per project, not per account, so a second project doubles the bill
  • Starter at $35 a month allows 100,000 API requests, and overage is $1.50 per 25,000
  • Extra bandwidth is $30 per 100 GB and extra asset storage $0.60 per GB
  • Backups start at the Pro plan, weekly, and only become daily at Business
  • An uptime SLA is Business only, at $450 a month per project
  • Additional environments cost $60 a month on Pro and $300 a month on Business

Pricing, plan by plan

Apache Flink

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

Strapi

$35/month
  • Starter$35/month
    • 100k API requests
    • 50 GB asset storage
    • 50 GB asset bandwidth
  • Pro$90/month
    • 1M API requests
    • 250 GB asset storage
    • 500 GB asset bandwidth
  • Business$450/month
    • 10M API requests
    • 1000 GB asset storage
    • 1000 GB asset bandwidth

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 Strapi if

  • You need rest api.
  • You work on Node.js, Cloud, Self-hosted, Docker.
  • You also want graphql api.
Strapi review

Questions people ask

Is Apache Flink or Strapi better?
Neither clearly leads. Apache Flink starts at Free and Strapi at $35/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apache Flink or Strapi?
Apache Flink has a free tier; the other does not. Paid plans start at Free for Apache Flink and $35/month for Strapi.
Does Apache Flink or Strapi run on more platforms?
Apache Flink runs on Linux, Kubernetes, Docker, Self-hosted. Strapi runs on Node.js, Cloud, Self-hosted, Docker.
Can I use Apache Flink for free?
Yes. Apache Flink has a free tier, so you can try it without paying. Strapi starts at $35/month.
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 Strapi is typically brought in for.
What can Apache Flink do that Strapi cannot?
Apache Flink covers Event-time processing, Exactly-once state, Batch and stream, SQL interface. Strapi covers REST API, GraphQL API, Content management, 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.

Strapi: How much do API request overages cost?

Additional API requests beyond the plan limit cost $1.50 per 25000 requests. Extra asset storage costs $0.60 per GB, and additional bandwidth costs $30 per 100 GB.

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.

Strapi: Is yearly billing available?

Yes, yearly billing saves up to 17% compared to monthly billing on Strapi Cloud plans.

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.

Strapi: What is included with the Pro plan?

The Pro plan costs $90 per month per project and includes 1M API requests, 250 GB asset storage, 500 GB bandwidth, multi-environment support, weekly backups, and manual backups.

Source
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