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PHP
JSON Structured Logger
Append a single JSON object per line to a log file. Easy to grep and to ship into Datadog / Loki / CloudWatch later without re-parsing.
@admin
Python
Timing Decorator with Logger
Drop @timed on any function and get its wall-clock duration logged on every call. Uses functools.wraps so introspection (name, docstring, signature) still works.
Rust
tracing — Structured Logging Setup
`tracing` is the structured-logging story for async Rust — better than `log` for anything tokio-based. Drop in this initializer and use `info!`, `warn!`, `error!` macros throughout.
PHP
Minimal PSR-3 Logger
A 30-line PSR-3 compatible logger you can drop into any project that expects \Psr\Log\LoggerInterface. Writes to a file using the JSON structured format.
Python
logging.basicConfig with Rotating File
A solid logging setup: rich format, rotating file handler so logs don't fill the disk, plus a console handler at a higher level so noisy DEBUG only goes to the file.
Go
log/slog — Structured Logging
`log/slog` (Go 1.21+) is the standard structured logger. Drop-in replacement for `log` with key/value attributes and JSON output for log-pipeline ingestion.