fxlogax

Fxlogax is a cross-platform open-source library designed to provide fast, structured logging and telemetry for applications. It emphasizes low overhead and rich contextual information to support observability in multi-language and multi-runtime environments. The project began as a collaboration among systems developers and is maintained by a community of contributors under an open-source license.

Key features include zero-allocation logging paths, batched writes, and configurable sinks for console, files, syslog, and network endpoints. It supports structured JSON and key-value logs, multiple log levels, and context propagation through correlation identifiers. Fxlogax also offers sampling to reduce log volume in high-traffic systems and provides functional interfaces for composing log pipelines with transformations and filters. Native bindings exist for several languages to enable consistent logging semantics across a stack.

Architecture revolves around a lightweight core responsible for log records and routing, plus modular sinks and adapters. The core prioritizes thread-safety, low latency, and a pluggable configuration model that can be reloaded at runtime. The default data model includes timestamp, level, message, logger name, and per-record metadata, with extensible fields for application-specific context.

Usage typically involves initializing the logger at startup with a service name and environment, selecting desired sinks, and emitting logs through level-specific functions. Typical workflows emphasize structured logging to enable easier searching, correlation, and analysis in observability pipelines.

See also: structured logging, observability, telemetry, logging backends.