Alternatives

Recipe	Crates	Categories
Older alternatives to tracing
log
slog
log4rs
env_logger
Other frameworks
OpenTelemetry
OpenObserve

Older alternatives to tracing

Tracing is now the "go-to" crate for logging.

log

log is an older and simpler crate if your needs are simple and you are not using any async code.

slog

Structured, extensible, composable logging.

slog remains a stable, featureful and battle-tested library, used in many important projects.

log4rs

A highly configurable multi-output logging implementation for the log facade.

use log::{error, info, warn};
use log4rs;

fn main() {
    log4rs::init_file("config/log4rs.yaml", Default::default()).unwrap();

    info!("booting up");

    // ...
}

env_logger

A logging implementation for log which is configured via an environment variable. env_logger makes sense when used in executables (binary projects). Libraries should use the log crate instead.

use log::info;

fn main() {
    env_logger::init();

    info!("starting up");

    // ...
}

Other frameworks

OpenTelemetry

OpenTelemetry Rust documentation⮳

OpenObserve

openobserve⮳ (written in Rust) is a petabyte-scale Elasticsearch/Splunk/Datadog alternative for logs, metrics, traces, RUM, error tracking, and session replay.