01a035df - Serve GET /v1/statistic/status from the cached list root

[TaprootFreak]

EN:
Listed nested GET /v1/statistic/status was answered with 503 not served even when the list-root cache held a status object. This change stores that object under the nested cache key whenever GET /v1/statistic is cached with HTTP 200. A miss stays 503 and is never forwarded. Keyword monitors that look for ONLINE on this path can succeed again after deploy.

DE:
Der gelistete nested GET /v1/statistic/status antwortete mit 503 not served, obwohl der List-Root-Cache bereits ein status-Objekt hatte. Diese Änderung legt dieses Objekt unter den nested Cache-Key, sobald GET /v1/statistic mit HTTP 200 gecacht wird. Ein Miss bleibt 503 und wird nie weitergeleitet. Keyword-Monitore, die auf diesem Pfad nach ONLINE suchen, können nach dem Deploy wieder grün werden.

Details

The list root GET /v1/statistic is a CACHE_PREFIXES entry and is filled in the background. Nested /v1/statistic/status is already isServedPath (prefix match) so a miss is local 503, never a backend fetch. The list-root JSON embeds status: { buy, sell, … }, which is the body of the nested path.

putCache('GET /v1/statistic', 200, …) now copies a non-array object status field to GET /v1/statistic/status. Invalid JSON, a missing/null/array/non-object status, or a non-200 parent does not fan out. Replacing the parent with a body that has no status object deletes the nested key so a stale status is not served.

Pins in test/server.test.js cover fan-out, drop-on-replace, HTTP 200 x-front-api: hit after refresh, and 503-not-forwarded on miss. test/test-server.sh greps the production helper. Catalog: the /v1/statistic usedIn note was updated; no new catalog row.

REVIEW item 11: the /v1/statistic e2e pointer stays unidentified. There is no public frontend flow that hits /v1/statistic/status. The behaviour is pinned in this repository. Written grant requested to land without a new consumer e2e.

[TaprootFreak]

EN:
Ready after 1 review pass.
Serves GET /v1/statistic/status from the cached GET /v1/statistic status object.

DE:
Bereit nach 1 Review-Durchlauf.
Liefert GET /v1/statistic/status aus dem gecachten status-Objekt von GET /v1/statistic.

Details

Gates at head db00b574b7260e55fb9b2cf8a4c50a58a3dedb1b:

• Quality and logic reviews: 0 findings on pass 1 (no follow-up commits).
• CI test: SUCCESS on that head.
• Mergeable: MERGEABLE against develop.
• Issue comments, reviews, inline comments, and review threads: none open.
• Required status checks: none on develop (no classic protection, no ruleset required checks). Visible check: test.
• REVIEW item 11: /v1/statistic e2e remains unidentified; a written grant is requested in the PR body.