---
title: Redirect and migration graph
code: G17
shelf: Graph systems
url: https://library.feedthejoe.com/graph-systems/g17-redirect-and-migration-graph/
markdown: https://library.feedthejoe.com/graph-systems/g17-redirect-and-migration-graph.md
author: Joseph W. Anady
publisher: THATDEVELOPERGUY LLC
status: "Researched: Not deployed"
summary: What happens to each old URL, and is the migration reversible?
published: 2026-09-12
reviewed: 2026-09-12
modified: 2026-09-12
release: 2026.09.12-g40
edition: 2026.09.12-g40
words: 151
sources:
  - graph:S17
  - graph:S41
cites:
  - https://library.feedthejoe.com/graph-systems/primary-source-register/
rights: © 2026 THATDEVELOPERGUY LLC. All rights reserved.
---

# G17 Redirect and migration graph

## Question

What happens to each old URL, and is the migration reversible?

## Nodes

Old URL; Hop; Destination; Release; Rollback mapping

## Relationship sketch

* old URL → redirect hop
* final URL → intended replacement
* mapping → release version

## Evidence inputs

Authorized redirect map, actual HTTP observations, content equivalence decisions, backup mapping.

## Implementation

Check loops, long chains, deleted destinations, and mismatched content. Treat redirect changes as authorized production changes with rollback; do not silently replace all missing pages with the homepage.

## Acceptance checks

* No loop in approved redirect paths
* Every moved important URL has a reviewed outcome
* Rollback restores the previous mapping

## Do not infer

An HTTP redirect does not prove the destination inherited a particular ranking.

## Publication boundary

Redirect behavior public; migration control records private.

## Source basis

[S17](https://library.feedthejoe.com/graph-systems/primary-source-register/#S17), [S41](https://library.feedthejoe.com/graph-systems/primary-source-register/#S41). See Research/sources.json. Sources support the primitives or named technology. The organization, labels, actions, and acceptance contracts in this catalog are this library's design, not claimed provider requirements.