Peroutput

Peroutput, sometimes written per-output, is a design term used in software engineering to describe processing that is applied for each distinct output target produced by a system that generates multiple outputs. It is not a universal language construct but a conceptual label used across domains such as data processing, reporting, and multimedia pipelines.

In multi-output systems, a single input stream may be routed to several destinations. Peroutput processing allows developers to customize handling for each destination—formatting, filtering, encoding, or resource management—without duplicating the entire pipeline for every target. It is typically implemented via per-output loops, maps from outputs to processors, or event-driven callbacks that trigger when an output is produced.

Examples include a document generator that produces PDF, HTML, and CSV outputs, where peroutput rules tailor fonts and layout for PDF, structure for accessible HTML, and column organization for CSV. In a logging framework, peroutput formatting may be applied to different sinks such as file, console, and remote server. In an ETL workflow, peroutput transformations can be used to generate distinct schemas for separate data destinations.

Implementation notes emphasize configuring settings per destination while sharing a common upstream processing stage. Peroutput logic can be stateless or maintain per-output state, and performance considerations include minimizing duplication and ensuring thread-safety when outputs are produced concurrently. See also: output channel, stream processing, multi-output, and callback-based architectures.