OSS TanbouOverview
Fluent Bit is a lightweight, high-performance telemetry agent that collects, processes, and forwards logs, metrics, and traces from any source to destinations. Its small CPU and memory footprint and plugin architecture support pipelines from servers, containers, and edge devices to observability backends.
Features and best fit
Based on official documentation; not hands-on tested · Content checked:
Compose telemetry paths from input, filter, and output plugins
The official README lists more than 70 built-in plugins, SQL stream processing, TLS/SSL with asynchronous I/O, and internal metrics exposed through HTTP and Prometheus. Inputs collect logs, metrics, and traces, filters enrich and transform them, and outputs deliver them to external services in a modular pipeline.
Sources: [1]
For relaying telemetry from hosts, containers, and edges to multiple backends
It fits Linux, Windows, macOS, BSD, and embedded environments that must send application logs, system metrics, or traces to collectors and storage. Separating inputs from destinations allows routing, masking, enrichment, and format conversion to move into the agent layer.
Sources: [1]
Plan buffering, back-pressure, loss, sensitive data, and plugin compatibility
When telemetry volume exceeds destination capacity, validate memory or filesystem buffering, retries, back-pressure, drop policy, and delivery guarantees. Credentials and TLS, filtering personal data or secrets, parser failures, label cardinality, and plugin-release compatibility are also operational concerns. Source builds require CMake, a compiler, Flex, Bison, and a YAML library. The license is Apache-2.0.
Official sources
- [1]Fluent Bit README(2026-09-13)
- [2]Fluent Bit LICENSE(2026-09-13)
Supplemental curator note
Selected for using rich logs, metrics, and traces topics to offset the Fluent Bit, fluent-bit, and fluentbit spelling variants.
Growth
Growth trends · Last 30 days
8,095 Stars
Trend data is still being collected.
Development activity
Last 90 days · weekly
- Commits (last 30 days)
- 151
- Open PRs
- 503
Development activity is still being collected.
Built with
Categories and tags
Categories
GitHub data
GitHub dataView detailed GitHub data
GitHub Topics
- fluentd
- c
- logging
- data-collector
- fluent-bit
- forwarder
- cloudnative
- stream-processing
- sql-queries
- metrics
- traces
- logs
- Stars
- 8,095
- Forks
- 1,997
- Watchers
- 104
- Open issues
- 265
- Primary language
- C
- License
- Apache-2.0
- Repository last updated
- Sep 11, 2026
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