Comparison

Logly is a high-performance logging alternative with a Rust-native engine. It provides a clean, intuitive API with 10 built-in log levels, flexible sinks, file rotation, compression, and first-class framework integrations.

Feature Matrix

Capability	Logly	Loguru	structlog	stdlib logging
Engine	Rust (PyO3)	Pure Python	Pure Python	Pure Python
10 built-in levels	✅	✅	❌	❌
Custom levels	✅	✅	❌	Manual
Multiple sinks	✅	✅	❌	✅
JSON serialization	✅	✅	✅	Formatter dependent
Custom format strings	✅	✅	❌	Formatter dependent
Level filtering	✅	✅	❌	✅
Callable filtering	✅	✅	❌	❌
Context binding	✅	✅	✅	Adapter based
Scoped context	✅	✅	❌	❌
Record patching	✅	✅	❌	❌
Exception catching	✅	✅	❌	❌
File rotation	✅	✅	❌	Handler dependent
Compression	✅	✅	❌	Handler dependent
Background workers	✅	✅	❌	QueueHandler
HTTP logging	✅	✅	❌	❌
TCP/UDP logging	✅	✅	❌	❌
Syslog	✅	✅	❌	❌
FastAPI integration	✅	✅	❌	❌
Django integration	✅	✅	❌	❌
Flask integration	✅	✅	❌	❌
Rich console	✅	✅	❌	❌
OpenTelemetry	✅	✅	❌	❌
Prometheus	✅	✅	❌	❌
Elasticsearch	✅	✅	❌	❌
Sentry	✅	✅	❌	❌
Pydantic config	✅	❌	❌	❌
Type stubs	✅	❌	✅	❌
Zero unsafe Rust	✅	N/A	N/A	N/A

Switching from Loguru

# Before (Loguru)
from loguru import logger
logger.add("app.log", rotation="10 MB", retention="7 days")

# After (Logly)
from logly import logger
logger.add("app.log", rotation="10 MB", retention="7 days")

Note

If you're currently using Loguru, switching to Logly is straightforward - just change your imports.