Kafka Streams

Plans and prices

Every plan, in full

On the record

APIs

The Streams DSL provides operations such as map, filter, join, and aggregations, while the Processor API supports custom processors and state stores.kafka.apache.org · read 30 Sep 2026

Architecture

Kafka Streams requires no separate processing cluster and uses Kafka as its internal messaging layer.kafka.apache.org · read 30 Sep 2026

Commercial support

The Apache Software Foundation says it does not sell its software or provide formal or commercial support for its packages.apache.org · read 30 Sep 2026

Deployment

Kafka Streams applications can be deployed to containers, virtual machines, bare metal, or cloud environments.kafka.apache.org · read 30 Sep 2026

Integrations

Kafka's ecosystem includes tools for stream processing, Hadoop integration, monitoring, and deployment, and Kafka Connect provides connectors for external systems.kafka.apache.org · read 30 Sep 2026

License

Apache Software Foundation software is licensed under the Apache License 2.0.apache.org · read 30 Sep 2026

Processing

Kafka Streams processes and analyzes data stored in Kafka, including event-time processing, windowing, and real-time application-state queries.kafka.apache.org · read 30 Sep 2026

Processing semantics

Kafka Streams supports exactly-once processing semantics.kafka.apache.org · read 30 Sep 2026

Programming

Kafka Streams supports standard Java and Scala applications.kafka.apache.org · read 30 Sep 2026

Purpose

Kafka Streams is a client library for building applications and microservices whose input and output data are stored in Kafka clusters.kafka.apache.org · read 30 Sep 2026

Scalability

Applications can run on one machine for a proof of concept and scale across multiple machines for high-volume production workloads.kafka.apache.org · read 30 Sep 2026

Security

Kafka Streams natively integrates with Kafka security features, including encryption in transit, client authentication, and client authorization.kafka.apache.org · read 30 Sep 2026

Security reporting

Apache asks potential security vulnerabilities to be reported first to private security mailing lists.apache.org · read 30 Sep 2026

State

Kafka Streams supports fault-tolerant local state for stateful operations such as windowed joins and aggregations.kafka.apache.org · read 30 Sep 2026

Support

The Kafka project provides user, developer, JIRA, and commit mailing lists for community support and project communication.kafka.apache.org · read 30 Sep 2026

Alternatives to Kafka Streams

E EstuaryWebWindows+4 L LensesWebWindows+4 CC Confluent CloudWebLinux+1 A ArroyoWebMac+3 E EsperWindowsMac+3 M MaterializeWebLinux+2 T TimeplusWebWindows+4 R RisingWaveWebMac+3

Every alternative, ranked