Logging and monitoring

Annotate a method, and logbuch logs each call to it, with the arguments on entry, the result and the duration on exit, or any exception

A Logger that focuses on compatibility and flexible formats

A metrics and distributed trace collector for Instana instrumentation performance monitoring opentracing metrics metrics-gathering performance-monitoring distributed-tracing

Statsd client library statsd datadog monitoring

Flexible logging framework based on Monolog logging logger

Elegant, fancy console logger console-logger console-log

JSONbase logger json logger log-json logging

A library for notifications

A Grafana library to help autogenerate dashboards

Implementation of Syslog client

Simple and flexible logger

Runtime and memory allocation metrics performance-analysis

A powerful logger for those that need a little something more

A structured logger for Fluentd

Logger interface to write to multiple loggers

Provides macros for Crystal that implement compile-time and runtime checked reminders

Tailing log file

A Log::Backend that writes to syslog logging syslog

A Prometheus client library