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Apache Flink vs Apache Samza

Both stand on streaming analytics software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Apache Flink

Free plan APILinuxSelf-hosted

Apache Flink offers stream and batch processing APIs with operational capabilities for self-hosted deployments. Its security defaults and code execution permissions make deployment configuration an important consideration.

Visit Apache Flink

Apache Samza

Free plan APILinuxSelf-hosted

Choose Apache Samza if you need a free, self-hosted framework for real-time stream processing with state stores, multiple APIs, and built-in integrations. Look elsewhere if you need a binary release or a processing guarantee beyond at least once.

Visit Apache Samza

The facts

Apache FlinkApache Samza
Free planYesYes
Open sourceNot publishedNot published
Runs onAPI, Linux, Self-hostedAPI, Linux, Self-hosted
Lowest paid planFree or on requestFree or on request
Plans published11
MakerNot publishedNot published
Websiteflink.apache.orgsamza.apache.org
On streaming analytics software#3 of 25#7 of 25

Apache Flink: what it does well

  • Supports stateful processing of bounded and unbounded streams.
  • Offers SQL, DataStream, and ProcessFunction APIs.
  • Lists high availability and incremental checkpoints.
  • Free under Apache License v2.
  • Supports Java, Python, and Scala.

What to know first

  • Self-hosted deployment requires operational responsibility.
  • SSL/TLS and listed authentication options are disabled by default.
  • Submitted code is not sandboxed.
  • Mailing-list posting requires subscription.

Apache Samza: what it does well

  • Free plan with open-source distribution.
  • Supports both stateful and stateless stream processing.
  • Offers Streams, Task, SQL, and Beam APIs.
  • Integrates with Kafka, Kinesis, Azure Event Hubs, Elasticsearch, and Hadoop.
  • Supports YARN, Kubernetes, or standalone deployment.

What to know first

  • Self-hosted deployment requires users to run Samza.
  • The download page says no binary release is available.
  • Python and Go support for Beam is work in progress.
  • Processing guarantee is at least once.

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