Apache Flink® — Stateful Computations over Data Streams



All streaming use cases
  • Event-driven Applications
  • Stream & Batch Analytics
  • Data Pipelines & ETL
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Guaranteed correctness
  • Exactly-once state consistency
  • Event-time processing
  • Sophisticated late data handling
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Layered APIs
  • SQL on Stream & Batch Data
  • DataStream API & DataSet API
  • ProcessFunction (Time & State)
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Operational Focus
  • Flexible deployment
  • High-availability setup
  • Savepoints
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Scales to any use case
  • Scale-out architecture
  • Support for very large state
  • Incremental checkpointing
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Excellent Performance
  • Low latency
  • High throughput
  • In-Memory computing
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Apache Flink Kubernetes Operator 1.1.0 Release Announcement

The community has continued to work hard on improving the Flink Kubernetes Operator capabilities since our first production ready release we launched about two months ago.

Apache Flink ML 2.1.0 Release Announcement
The Apache Flink community is excited to announce the release of Flink ML 2.1.0! This release focuses on improving Flink ML's infrastructure, such as Python SDK, memory management, and benchmark framework, to facilitate the development of performant, memory-safe, and easy-to-use algorithm libraries. We validated the enhanced infrastructure via benchmarks and confirmed that Flink ML can meet or exceed the performance of selected algorithms from alternative popular ML libraries. In addition, this release added example Python and Java programs to help users learn and use Flink ML.
FLIP-147: Support Checkpoints After Tasks Finished - Part Two
This post presents more details on the changes on the checkpoint procedure and task finish process made by the final checkpoint mechanism.
FLIP-147: Support Checkpoints After Tasks Finished - Part One
This post briefly describes the motivation and changes made by the final checkpoint mechanism, including the changes to the checkpoint procedure and how tasks finish.
Apache Flink 1.15.1 Release Announcement
The Apache Flink Community is pleased to announce a bug fix release for Flink 1.15.