fix(rates): reduce cache TTL, expose fallback header and show stale data warning

2026-03-09 18:17:01 +01:00
parent 1f86a5ead4
commit 10493826bf
4 changed files with 31 additions and 6 deletions
--- a/hooks/use-market-rates.ts
+++ b/hooks/use-market-rates.ts
@@ -28,9 +28,11 @@ export function useMarketRates() {

      const payload = await response.json();
      const parsed = parseRatesResponse(payload);
+      const isFallback = response.headers.get("X-Cache-Fallback") === "stale-on-error";
+      const fallbackError = response.headers.get("X-Cache-Fallback-Error");

      setData(parsed);
-      setError(null);
+      setError(isFallback ? (fallbackError ?? "Upstream provider error") : null);
    } catch (err) {
      const message = err instanceof Error ? err.message : "Unknown error";
      setError(message);