head to head · open source
flink-cdc vs fluvio
flink-cdc has 6,491 GitHub stars, 2,205 forks, 119 open issues and last shipped yesterday. fluvio has 5,260 stars, 531 forks, 139 open issues and last shipped 3 days ago. flink-cdc leads on adoption by 23% (6,491 vs 5,260 stars). flink-cdc is written in Java under Apache-2.0; fluvio is written in Rust under Apache-2.0. flink-cdc has attracted 34% as many forks as stars, fluvio 10%. flink-cdc was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (data-integration), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| flink-cdc | fluvio | |
|---|---|---|
| GitHub stars | ★ 6.5K | ★ 5.3K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Java | Rust |
| Last push | 2026-11-04 | 2026-11-02 |
| Forks | ⑂ 2.2K | ⑂ 531 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick flink-cdc if
- You weight community size — 6.5K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick fluvio if
- You want the fluvio feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and fluvio fits your workflow better
About flink-cdc
Flink CDC is a distributed data integration tool for real time data and batch data, built on top of Apache Flink. It prioritizes efficient end to end data integration and offers enhanced functionalities such as full database synchronization, sharding table synchronization, schema evolution and data transformation. API Layers Flink CDC provides three API layers for different usage scenarios: 1. YAML API (Pipeline API) The YAML API provides a declarative, zero code approach to define data pipelines. Users describe the source, sink, routing, transformation, and schema evolution rules in a YAML file and submit it…
read the full flink-cdc overview →
About fluvio
Fluvio Composable, Declarative, Stateful Data Streaming System Fluvio is a lean and mean distributed data streaming engine written in Rust. Combined with Stateful DataFlow distributed stream processing framework, Fluvio provides a unified composable distributed streaming and stream processin g paradigm for developers. Quick Start Get started with Fluvio in 2 minutes or less! Step 1. Download Fluvio Version Manager: Fluvio is installed via the Fluvio Version Manager , shortened to fvm . To install fvm , run the following command: TEMPORARY NOTE : While we are transitioning to a new fluvio community hosted fluvio…
read the full fluvio overview →
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Frequently asked questions
Is flink-cdc or fluvio more popular?
flink-cdc has 6,491 GitHub stars and fluvio has 5,260. flink-cdc has the larger community by that measure.
Are flink-cdc and fluvio free?
Both are open source. flink-cdc is licensed under Apache-2.0 and fluvio under Apache-2.0. Neither carries a licence fee.
What is the difference between flink-cdc and fluvio?
flink-cdc is written in Java and fluvio in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, flink-cdc or fluvio?
Choose flink-cdc if you want the larger community (6,491 stars) or its Apache-2.0 licence terms. Choose fluvio if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.