Core Capabilities

The key tenets of this architecture are as follows


Data Streaming

Data streaming is data that is generated continuously by any number of sources in many different formats. Your data might be:

  • logs or traces generated by mobile or web applications
  • sensors from industrial robots, drones, or farm equipment
  • financial stock tickers
  • online purchases
  • in-game player activity
  • telemetry from connected devices
  • database events

and more.

Fluvio data streaming is designed for horizontal scale. Multiple data streams can concurrently ingest and replicate data for resiliency. Data is processed sequentially on a record-by-record basis in the order it was received, and it is stored in immutable streams. A user-configurable retention period controls the length of time the data is retained. The retention period can be anywhere from hours to years.

Fluvio producers can write to one or more data streams and consumers can read from any number of streams.

Fluvio data streaming is designed for speed, scale, security and resiliency.



Fluvio is written in Rust, a programming language designed for code safety and performance. For instance, a benchmark comparison between Rust and Java on a simple web server implementation revealed that Rust outperforms Java in many areas:

Performance Test Java Rust Improvement
Latency (Fibonacci) 1,900 ms 57.71 ms ~30x
Memory 1,498 MB 16.94 MB ~80x
Idle Memory 162 MB 0.36 MB ~450x
CPU Utilization 73% 24% ~3x
Program Size 27 MB 3.7 MB ~8x

These values are derived from a simple web server implementation and can be significantly higher in large programs with many libraries and dependencies.

Fluvio also takes advantage of other Rust capabilities, such as:

While other data streaming platforms use polling to consume messages, Fluvio uses async processing for significantly lower latency.



Fluvio is designed for horizontal scale, with multiple Streaming Processing Units being gradually dispatched to handle an increasing number of concurrent data streams.

Fluvio uses partitioning to divide data into smaller sub-streams for availability, fault tolerance and manageability. Each partition is an independent data streaming unit that can scale independently. Partitions are distributed evenly across Streaming Processing Units (SPUs) to ensure a balanced system. This architecture choice enables Fluvio clients to write-to or read-from multiple partitions simultaneously.

For additional information, check out the Topic/Partition section.



Fluvio is designed with security and privacy in mind. Fluvio producers, consumers, and other clients must authenticate with a target Cloud cluster and download security certificates before they are authorized access. The platform uses the certificates with TLS to encrypt all communication between the clients and the cluster.



Fluvio is designed for fault tolerance and high availability. Data streams are replicated and can survive multiple points of failure. Failures may range from crash of a host machine to network outages, and more. Fluvio ensures that data streams remain available with minimal interruption for subsequent processing.

All system components have self-healing recovery mechanisms and automatic failover to increase resiliency and simplify usability. Fluvio has built-in eventual consistency to allow recovering SPUs to update their internal state and rejoin the cluster as fully functional units.

For additional information, check out the Replica Election section.


Language Native APIs

Fluvio is designed to integrate natively with most programming languages. The following native interfaces are listed in order of priority:

The APIs can be used to manage and operate all areas of the systems:

  • clusters
  • data streams
  • consumer
  • producers

Fluvio supports polyglot environments where App modules written in different programming languages use native interfaces to access data streams.


Ease of Use

Fluvio is designed for operational efficiency and ease of use.

Built-in cluster management capabilities normalize and simplify all infrastructure operations. The platform can be installed just as easily on a laptop, a data center, or a public cloud. Integrated Kubernetes capabilities make Fluvio easy to install in any modern Enterprise environment.

Fluvio is designed for developers. The built-in installer helps you get up and running quickly. The profile-based configuration allows you to switch between different Fluvio installations with ease. Native language support gives you the flexibility to pick your programming language of choice - where data streaming APIs are managed through native code. Fluvio’s developer-first approach eliminates complexity and minimizes the learning curve required to bootstrap and run a data streaming environment.

Fluvio uses declarative configurations instead of imperative commands to manage system resources such as topics and partitions. The declarative configuration approach lets the platform provision resources dynamically as they become available and self-heal from failures. Existing data streaming platforms return errors and leave all remediation tasks to the operator to resolve. When using Fluvio, operators give you the confidence to configure and walk away. You can trust that the platform will recover from errors and operate at optimal performance.