Introduced a request-scoped `Map` (`authCache`) in `app/api/map/route.ts` to memoize `isAuthenticated` calls.
The `getMapData` loop iterates over all albums across all locations. Albums within the same subpage slug trigger repeated `isAuthenticated` checks, which execute expensive HMAC cryptographic operations, causing performance degradation for large datasets.
Eliminates redundant cryptographic operations during map data fetching, reducing CPU utilization and response times for the Map API.
Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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