output3L

Output3L is a compact coding convention used in some data-processing and logging frameworks to represent the nature of an output with a three-letter code. In these systems, an output3L field stores a three-character string that encodes the channel, status, and category of the produced output. The approach favors concise transmission and can reduce verbosity in logs and messages when many outputs are emitted rapidly.

The coding scheme is project-specific but follows a common pattern: the first character identifies the output channel (for example, C = console, F = file, N = network, A = API). The second character indicates processing status (O = ok, E = error, W = warning, I = in-progress). The third character designates the data category (D = data payload, L = log entry, M = metric). Because there is no universal standard, mappings are documented in each project’s codebook or schema.

Usage and behavior: Output3L values appear in structured records such as JSON or in compact log lines to enable quick filtering and routing. Applications may translate the code to human-readable labels at display time, or drive automated routing rules based on the code.

Examples: COD stands for Console-OK-Data; FEL stands for File-Error-Log; NWM stands for Network-Warn-Metric. Some projects reuse different letter mappings, so interpretation should always consult the local documentation.

Limitations and scope: Output3L is not a universal standard and is best viewed as a lightweight convention for high-volume systems. It is most effective when part of a well-documented schema and used consistently within a project.