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Apache Kafka
What it is
Apache Kafka is a free, open-source distributed event streaming platform for data pipelines, streaming analytics, data integration, and mission-critical applications. Applications can publish and subscribe to event streams, store them durably, and process them in real time or later. Kafka Streams supports stateful operations, aggregations, windowing, joins, event-time processing, and exactly-once processing. Kafka Connect integrates event sources and sinks, with examples including Postgres, JMS, Elasticsearch, and AWS S3. The project describes durable, fault-tolerant storage and replication across availability zones, data centers, or regions. Kafka can run on hardware, virtual machines, or containers, on premises or in the cloud, with self-managed or vendor-managed service options. The project describes throughput at network-limited rates, latency as low as 2 ms, and scaling to clusters of up to a thousand brokers. Kafka is available under Apache License 2.0. The Apache Software Foundation does not provide formal or commercial support for its software packages. The quickstart requires Java 17 or later in a local environment.
For and against
For
- Free and open source under Apache License 2.0
- Supports durable event storage and real-time processing
- Kafka Streams includes stateful operations and event-time processing
- Kafka Connect links sources and sinks
Against
- No formal or commercial support from ASF
- Local quickstart requires Java 17 or later
The verdict
Kafka provides event streaming, storage, and processing capabilities with multiple deployment options. Teams should account for the Java quickstart requirement and lack of formal or commercial ASF support.
Who it suits
Kafka suits teams building event-streaming systems for data pipelines, integration, analytics, and related applications. It can be self-managed or used through a vendor-managed service.
Plans and prices
Apache Kafka
Available to download for free · No formal or commercial support from ASF
Read 9 Oct 2026 · apache.org
On the record
- Availability and durability
- Kafka supports durable, fault-tolerant storage and replication across availability zones, data centers, or geographic regions.kafka.apache.org · read 9 Oct 2026
- Deployment
- Kafka can run on bare-metal hardware, virtual machines, or containers, on premises or in the cloud, with self-managed or vendor-managed service options.kafka.apache.org · read 9 Oct 2026
- Event streaming
- Kafka lets applications publish and subscribe to event streams, store them durably, and process them in real time or retrospectively.kafka.apache.org · read 9 Oct 2026
- Integrations
- Kafka Connect integrates with hundreds of event sources and sinks; the homepage names Postgres, JMS, Elasticsearch, and AWS S3 as examples.kafka.apache.org · read 9 Oct 2026
- License
- The Apache Software Foundation identifies Apache License 2.0 as a widely adopted open-source license.apache.org · read 9 Oct 2026
- Performance and scale
- The project describes throughput at network-limited rates, latencies as low as 2 ms, and scaling to clusters of up to a thousand brokers.kafka.apache.org · read 9 Oct 2026
- Quickstart requirement
- The Kafka quickstart says a local environment must have Java 17 or later installed.kafka.apache.org · read 9 Oct 2026
- Security
- The project describes Kafka as secure; the ASF directs vulnerability reports to its security page.kafka.apache.org · read 9 Oct 2026
- Stream processing
- Kafka Streams supports stateful operations, aggregations, windowing, joins, event-time processing, and exactly-once processing.kafka.apache.org · read 9 Oct 2026
- Support
- The Apache Software Foundation says it does not provide formal or commercial support for its software packages.apache.org · read 9 Oct 2026
- Use cases
- The project lists messaging, website activity tracking, metrics, log aggregation, stream processing, event sourcing, and commit logs as Kafka use cases.kafka.apache.org · read 9 Oct 2026
- What it does
- Apache Kafka is an open-source distributed event streaming platform for data pipelines, streaming analytics, data integration, and mission-critical applications.kafka.apache.org · read 9 Oct 2026
