GUC diff
Configuration parameters added, removed, or changed between two majors — each linked to the commit that made the change and the thread that argued it, where resolvable.
Same data as JSON:
GET /api/v1/versions/:major/gucs?changed_since=…
the same diff as JSON; omit `changed_since` for the full per-major catalog.
API reference →
No GUC catalogs are loaded. The pipeline syncs them from the committed
priv/data/gucs/*.json
catalogs on the next load.