Technical guide
Choosing a Python logging library: six options compared
Compare logging, Loguru, structlog, Eliot, Logbook, and picologging by configuration, structured output, integration effort, and operational requirements.
Technical guide
Python logging: configuration, JSON output, and exception handling
Use named loggers, centralized configuration, structured fields, tracebacks, and safe file rotation, then validate Python log ingestion in Guance.
Technical guide
Python match-case: branch on the shape of your data
Use Python structural pattern matching for literals, sequences, mappings, and class instances, with guards, capture rules, and explicit fallback behavior.
Technical guide
Python subprocess: run commands and manage child processes
Run external programs with argument lists, capture output, handle failures and timeouts, stream child output, and control environment and working directory.
Technical guide
Python timeouts: HTTP, databases, and async deadlines
Set HTTP phase limits, database connection and statement timeouts, and cooperative async deadlines, then budget retries and handle uncertain write outcomes.
Technical guide
Python unittest.mock: control dependencies and verify behavior
Use Mock, patch, autospec, MagicMock, and AsyncMock to test dependency calls while keeping real interface and integration checks in view.
Technical guide
Rails logging: request tags, Lograge, and JSON application events
Configure Rails logging levels and request tags, add explicit Lograge fields, preserve valid JSON output, and verify request and trace correlation in Guance.
Technical guide
Redis logging: runtime events, SLOWLOG, and latency diagnosis
Configure Redis runtime logs, investigate slow commands and latency events, understand MONITOR limits, and collect the right diagnostic data in Guance.
Technical guide
Centralized logging with Rsyslog: forwarding, queues, and recovery
Configure Rsyslog receivers, TCP and RELP forwarding, action queues, TLS, rotation, and DataKit collection with explicit delivery and durability limits.
Technical guide
Ruby logging with Logger: JSON output, rotation, and exceptions
Configure Ruby Logger levels and formatters, preserve structured fields and exceptions, and check rotation and collection before sending logs to Guance.
Technical guide
Semantic Logger for Ruby: structured events, appenders, and timing
Use Semantic Logger payloads, exceptions, appenders, duration measurements, and signal controls while accounting for queue pressure, shutdown, and Rails integration.
Technical guide
Configure Serilog for structured .NET application logs
Use Serilog message templates, sinks, scoped context, compact JSON, and ASP.NET Core integration, then verify buffering, shutdown, and collection in Guance.