codeant-ai-for-open-source[bot] commented on PR #34565:
URL: https://github.com/apache/superset/pull/34565#issuecomment-4009020347
## **Sequence Diagram**
Shows the main flow where the frontend language change causes the backend to
convert the Locale to a stable string, use it as a cache key, extract the
language, and rebuild menu translations so the UI updates correctly.
```mermaid
sequenceDiagram
participant Client
participant Backend
participant CacheLayer
participant MenuBuilder
Client->>Backend: Request SPA payload after language change
Backend->>Backend: get_locale() -> str(locale) (normalize
hyphen/underscore)
Backend->>CacheLayer: cached_common_bootstrap_data(user_id, locale_str)
CacheLayer-->>Backend: (miss/hit ensures stable key using string)
Backend->>MenuBuilder: Extract language from locale_str and build
menu_data(language)
MenuBuilder-->>Backend: localized menu_data
Backend-->>Client: Return updated bootstrap payload (menu translations)
```
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