Apache Kafka vs Pravega
Apache Kafka
kafka.apache.orgPravega
pravega.ioSide by side
| Figure | Apache Kafka | Pravega |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Event Streaming Platforms | 7.8 (#12) | 6.9 (#18) |
| 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. | Pravega offers standalone mode for development and testing and distributed mode for production, including Kubernetes operators and Docker Swarm deployment options. |
| Integrations | Kafka Connect integrates with hundreds of event sources and sinks; the homepage names Postgres, JMS, Elasticsearch, and AWS S3 as examples. | The documented connectors include Apache Flink, Apache Spark, Apache Hadoop, Presto, Boomi, and Apache NiFi. |
| License | The Apache Software Foundation identifies Apache License 2.0 as a widely adopted open-source license. | Pravega describes itself as 100% open source and community-driven, with components available under the Apache 2 License on GitHub. |
| Security | The project describes Kafka as secure; the ASF directs vulnerability reports to its security page. | Pravega supports TLS encryption for communication channels and role-based access control through pluggable authentication and authorization implementations. |
| Support | The Apache Software Foundation says it does not provide formal or commercial support for its software packages. | The project directs users to its community Slack and offers GitHub Issues for bug reports. |
| What it does | Apache Kafka is an open-source distributed event streaming platform for data pipelines, streaming analytics, data integration, and mission-critical applications. | Pravega is an open-source storage system that uses streams to store continuous, unbounded data. |
Plans
In their own words
Apache Kafka
Apache Kafka is an 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, retain them durably, and process them either in real time or later. Kafka supports durable, fault-tolerant replication across availability zones, data centers, or geographic regions. Kafka Streams provides stateful operations, aggregations, windowing, joins, event-time processing, and exactly-once processing. Kafka Connect links hundreds of event sources and sinks, including Postgres, JMS, Elasticsearch, and AWS S3. Deployments can use bare metal, virtual machines, or containers, on premises or in the cloud, with self-managed or vendor-managed options. The project describes network-limited throughput, latency as low as 2 ms, and clusters of up to 1,000 brokers. Kafka is self-hosted, free, and open source under Apache License 2.0. A local quickstart requires Java 17 or later.
Pravega
Pravega is an open-source, self-hosted storage system built around durable append-only streams for continuous, unbounded data. Streams hold parallel byte sequences, can scale as ingestion changes, and use automatic tiering to scale-out storage. Data may be retained indefinitely, allowing applications to read current and historical events. Pravega describes exactly-once delivery and processing with ordering guarantees despite client, server, or network failures, and transactions can write event sets atomically. It targets streaming applications, IoT data, and batch or interactive analytics. Connectors are listed for Apache Flink, Spark, Hadoop, Presto, Boomi, and Apache NiFi; client languages include Java, Rust, and Python. Deployment options include a single-process standalone server or distributed mode with Docker Compose. Distributed production deployments list Java 11, supported long-term storage, ZooKeeper 3.6.3, and BookKeeper 4.14.1. TLS and role-based access control are configurable.