Blazing fast, structured, leveled logging in Go.

Zero Allocation JSON Logger

Fastest structured logging

🔥 Error handling library with context, assertion, stack trace and source fragments

🚨 Design workflows of slog handlers: pipeline, middleware, fanout, routing, failover, load balancing...

Minimal structured logging library for Go

Go errors but structured and composable. Fault provides an extensible yet ergonomic mechanism for wrapping errors.

jl — JSON Logs, a development tool for working with structured JSON logging.

🚨 slog: Attribute formatting

Interactive viewer for JSON logs.

🚨 Gin middleware for slog logger

Use golang structured logging (slog) with context. Add and retrieve logger to and from context. Add attributes to context. Automatically read any custom context values, such as OpenTelemetry TraceID.

🚨 Echo middleware for slog logger

🚨 slog sampling: drop repetitive log records

Serilog-inspired structured logging for Go with message templates, rich formatting, and native Seq support

🚨 net/http middleware for slog logger

🚨 Fiber middleware for slog logger

🚨 Chi middleware for slog logger

🚨 slog: Loki handler

🚨 slog: Zerolog handler