rosemariejebbjtxbfp
a75318b811
Stage-0 caching from docs/scalability.md. The Go API now caches hot product-detail and search-result reads in Redis with a fail-open, epoch-versioned scheme; Python ingestion bumps the epoch after a write run to invalidate the cache globally in O(1). - api/internal/cache: fail-open Cache (GetJSON/SetJSON) namespaced by an epoch counter (og:cache:epoch); disabled when Redis is unconfigured. - store: ProductByID/ProductByGTIN (24h TTL) and SearchProducts (1h TTL) read-through the cache via WithCache. - ingestion: bump_cache_epoch() called after update_off/seed_off/ import_bypos/dedup commits when rows changed; best-effort, never fails a run. Adds redis dependency. Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>