Goal

To spread processing of a message across multiple consumers, allowing flexible workflow, distribution of processing, and easy reuse (Figure C-5).

Figure C-5. Pipes and filters collaboration

Participants

Interactions

The sender transmits a message to the first message handler in the processing chain. The first handler in the chain examines the message and performs whatever processing is required. It then forwards the message to another handler for further processing. Each handler is required to determine the appropriate next destination.

Notes

For more on implementing flexible workflows, see the Service to Worker pattern.