Immutable-Slug Identity with Rename Redirect Map

These examples and illustrative results are independently authored teaching materials, not measured model results.

Use case

Rename published pattern ID100 in both languages while old slugs/anchors have external references. Stable identity determines canonical location; display changes should not retarget unrelated content or unexplained 404.

Mechanism

Separate identity/labels, preserve IDs and map necessary retired slugs to canonical identity/language. Check merge targets, fragments, loops/chains and no-JS entries. Distinguish HTTP redirects, client transfers and readable compatibility rather than calling all 301.

Bad example

Reuse ID100 for another method, delete old entries and claim server 301 from client script alone.

Good example

Keep teaching ID100, update bilingual labels and map old slugs/fragments to the same language-aware method. Explicit merges/removal reasons retain identities. Verify valid targets/no cycles/no-JS links and report actual transfer type without assuming search-signal migration.

Why the change matters

Stable identity preserves referenced objects through editorial changes. Explicit mappings retain language/entry continuity and actual redirect semantics.

Observable expectation

Old/new entries resolve ID100, with Chinese fragments reaching Chinese or explicit compatibility. Deliberate cycles fail.

Client success proves neither HTTP301 nor no-JS/search transfer; no live route changes occur.

Limits

Stable identity does not permanently retain bad content; merges/removals need decisions. Hosting capabilities and post-release checks determine migration effects. Provenance remains unconfirmed.