# Fluent Bit documentation

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[Fluent Bit](https://fluentbit.io) is a fast and lightweight telemetry agent for logs, metrics, and traces for Linux, macOS, Windows, and BSD family operating systems. Fluent Bit has been made with a strong focus on performance to allow the collection and processing of telemetry data from different sources without complexity.![](https://static.scarf.sh/a.png?x-pxid=71f0e011-761f-4c6f-9a89-38817887faae)

## Features

* High performance: High throughput with low resources consumption
* Data parsing
  * Convert your unstructured messages using Fluent Bit parsers: [JSON](https://docs.fluentbit.io/manual/data-pipeline/parsers/json), [Regex](https://docs.fluentbit.io/manual/data-pipeline/parsers/regular-expression), [LTSV](https://docs.fluentbit.io/manual/data-pipeline/parsers/ltsv) and [Logfmt](https://docs.fluentbit.io/manual/data-pipeline/parsers/logfmt)
* Metrics support: Prometheus and OpenTelemetry compatible
* Reliability and data integrity
  * [Backpressure](https://docs.fluentbit.io/manual/administration/backpressure) handling
  * [Data buffering](https://docs.fluentbit.io/manual/data-pipeline/buffering) in memory and file system
* Networking
  * Security: Built-in TLS/SSL support
  * Asynchronous I/O
* Pluggable architecture and [extensibility](https://docs.fluentbit.io/manual/fluent-bit-for-developers/library_api): Inputs, Filters and Outputs:
  * Connect nearly any source to nearly any destination using preexisting plugins
  * Extensibility:
    * Write input, filter, or output plugins in the C language
    * Wasm: [Wasm Filter Plugins](https://docs.fluentbit.io/manual/fluent-bit-for-developers/wasm-filter-plugins) or [Wasm Input Plugins](https://docs.fluentbit.io/manual/fluent-bit-for-developers/wasm-input-plugins)
    * Write [Filters in Lua](https://docs.fluentbit.io/manual/data-pipeline/filters/lua) or [Output plugins in Golang](https://docs.fluentbit.io/manual/fluent-bit-for-developers/golang-output-plugins)
* [Monitoring](https://docs.fluentbit.io/manual/administration/monitoring): Expose internal metrics over HTTP in JSON and [Prometheus](https://prometheus.io/) format
* [Stream Processing](https://docs.fluentbit.io/manual/stream-processing/overview): Perform data selection and transformation using basic SQL queries
  * Create new streams of data using query results
  * Aggregation windows
  * Data analysis and prediction: Time series forecasting
* Portable: Runs on Linux, macOS, Windows and BSD systems

### Release notes

For more details about changes in each release, refer to the [official release notes](https://fluentbit.io/announcements/).

## Fluent Bit, Fluentd, and CNCF

Fluent Bit is a [CNCF](https://www.cncf.io/) graduated sub-project under the umbrella of [Fluentd](https://www.fluentd.org).

Fluent Bit was originally created by [Eduardo Silva](https://www.linkedin.com/in/edsiper/) and is now sponsored by [Chronosphere](https://chronosphere.io/). As a CNCF-hosted project, it's a fully vendor-neutral and community-driven project.

## License

Fluent Bit, including its core, plugins, and tools, is distributed under the terms of the [Apache License v2.0](https://github.com/fluent/fluent-bit?tab=Apache-2.0-1-ov-file#readme).