Logiclevel

Logiclevel is a concept in software logging that denotes the priority or importance of individual log messages. In most logging systems, each message is assigned a logiclevel that indicates its severity or verbosity, and the system uses this level to decide whether to record or display the message. The term logiclevel is not universal; many libraries refer to log level or define the level as an enumerated value. The exact naming and numeric values vary by framework, but the underlying idea is consistent: higher-severity messages indicate more important events, while lower-severity levels capture more detail for debugging.

Common levels are arranged from most verbose to least: TRACE or DEBUG, INFO, WARNING (or WARN), ERROR, and CRITICAL (or FATAL). Some systems also include a TRACE level for very fine-grained information. In many implementations, log levels are mapped to numeric values, with higher numbers representing higher severity. This allows a single configuration to filter messages by threshold and to route messages to appropriate destinations.

Usage and behavior vary by framework, but a typical rule is: a logger configured with a threshold level L will emit messages whose level is at least as severe as L. Some environments support per-logger or per-module levels, enabling finer control over where and how verbose logging is produced. Configuration is usually via code, configuration files, or environment settings, and may support dynamic changes at runtime.

Considerations when using logiclevels include balancing the need for diagnostic information against performance and log storage, and ensuring sensitive data is not logged. See also logging framework, severity level, log rotation, and log filtering.