feat: implement HashArray utility and refactor product key generation for Redis

internal/ym/products/repository_api.go

@@ -39,6 +39,10 @@ func NewAPIRepository(marketplaceRepository marketplace.Repository) Repository {
 	}
 }
 
+func GetProductKey(identifier string) string {
+	return fmt.Sprintf("ym:products:%s", identifier)
+}
+
 // getBusinessID retrieves the business ID for a given marketplace by looking up the campaign
 func (r *apiRepository) getBusinessID(ctx context.Context, mp *marketplace.Marketplace) (int64, error) {
 	if mp.CampaignID == "" {
@@ -101,7 +105,7 @@ func (r *apiRepository) GetProducts(ctx context.Context, marketplaceID int, req
 		errChan <- err
 		return
 	}
-	key := fmt.Sprintf("ym:products:%d", businessID)
+	key := GetProductKey(strconv.Itoa(int(businessID)))
 	var cachedMessage pb.GetProductsResponse
 	err = redis.ReadProtoMessage(ctx, key, &cachedMessage)
 	if err == nil && len(cachedMessage.Offers) > 0 {