System Management

Detour

Temporarily divert selected traffic through an additional path and return it to the normal route afterward, without permanently redesigning the flow.

diagnosticstemporaryrouting
The problem
How can you route a message through intermediate steps to perform validation, testing or debugging functions?
Adapted from Enterprise Integration Patterns under CC BY 3.0. The visualization and explanatory content on this page are original GateSift material.
Original GateSift visualization

How Detour works

A routing decision sends the message along one of several possible paths.

Incoming message
Detour
Route A
Route B
Fallback
1

Inspect message content, metadata, state or routing configuration.

2

Use Detour to select the next destination or processing step.

3

Continue on the selected path while keeping the producer decoupled from destinations.

GateSift explanation

What this pattern helps you decide

Temporarily divert selected traffic through an additional path and return it to the normal route afterward, without permanently redesigning the flow.

What happens when processing fails or the same message is delivered twice?
Where does state, correlation or routing configuration live?
How will operators trace the message and understand the decision path?
Common Azure implementations

Where you may see it

  • APIM conditional diagnostic backend
  • Feature-flagged Logic App branch
  • BizTalk temporary send-port route
GateSift relevance

How the analyzers can surface it

  • Conditional diagnostic branches
  • Temporary routing configuration

Pattern detection is contextual. GateSift should present these as architectural signals, not claim a pattern is implemented solely because one policy statement or adapter exists.

Source, licence and attribution

The pattern name and selected problem statement are adapted from Enterprise Integration Patterns by Gregor Hohpe and Bobby Woolf under CC BY 3.0. GateSift summaries, Azure mappings, analyzer guidance and diagrams are original. No endorsement by the original authors is implied.

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