Refactor recommendation page cache handling and configuration

- Removed the `RecommendationPageCacheLanguages` configuration from `AISummarizerConfig` to streamline cache management.
- Updated the `companyService` and `tenderService` to utilize the new `InvalidateRecommendedTendersPageCache` method for cache invalidation, enhancing clarity and efficiency.
- Refactored the `invalidateRecommendedTendersPageCache` method to eliminate unnecessary context parameters, simplifying the function signature.
- Improved the handling of page cache refresh logic by consolidating language handling within the `tenderService`, ensuring consistent behavior across services.
- Cleaned up related tests and removed deprecated functions to maintain code quality and readability.

This update enhances the maintainability of the recommendation caching system by simplifying configuration and improving cache invalidation logic.

cmd/web/bootstrap/config.go

@@ -73,8 +73,6 @@ type AISummarizerConfig struct {
 	// RecommendationCacheTTL is an optional max Redis TTL for cached recommendations.
 	// When 0 (default), entries persist until the company is created, updated, or onboarded.
 	RecommendationCacheTTL time.Duration `env:"AI_RECOMMENDATION_CACHE_TTL" envDefault:"0"`
-	// RecommendationPageCacheLanguages lists languages pre-built for the recommendation page cache.
-	RecommendationPageCacheLanguages string `env:"AI_RECOMMENDATION_PAGE_CACHE_LANGUAGES" envDefault:"en"`
 
 	// MinIO storage settings
 	MinioEndpoint  string `env:"AI_SUMMARIZER_MINIO_ENDPOINT" envDefault:""`

cmd/web/main.go

@@ -241,12 +241,6 @@ func main() {
 	userService := user.NewService(userRepository, logger, userAuthService, userValidator, notificationSDK, redisClient, auditLogger)
 	categoryService := company_category.NewService(categoryRepository, logger)
 	companyService := company.NewService(companyRepository, categoryService, fileStoreService, aiRecommendationClient, aiPipelineClient, redisClient, conf.AISummarizer.RecommendationCacheTTL, logger)
-	pageCacheLanguages := tender.ParsePageCacheLanguagesConfig(conf.AISummarizer.RecommendationPageCacheLanguages)
-	if configurer, ok := companyService.(interface {
-		SetPageCacheLanguages([]string)
-	}); ok {
-		configurer.SetPageCacheLanguages(pageCacheLanguages)
-	}
 	customerService := customer.NewService(customerRepository, logger, customerAuthService, companyService, redisClient, notificationSDK, customerValidator, auditLogger)
 	tenderService := tender.NewService(
 		tenderRepository,
@@ -258,7 +252,6 @@ func main() {
 		aiSummarizerStorage,
 		redisClient,
 		conf.AISummarizer.RecommendationCacheTTL,
-		pageCacheLanguages,
 		conf.AISummarizer.DefaultLanguage,
 	)
 	if configurer, ok := companyService.(interface {

cmd/worker/bootstrap/bootstrap.go

@@ -121,11 +121,6 @@ func InitWorker(config Config, mongoManager *mongo.ConnectionManager, appLogger
 			config.AISummarizer.RecommendationCacheTTL,
 			appLogger,
 		)
-		if configurer, ok := recommendationRefresher.(interface {
-			SetPageCacheLanguages([]string)
-		}); ok {
-			configurer.SetPageCacheLanguages(tender.ParsePageCacheLanguagesConfig(config.AISummarizer.RecommendationPageCacheLanguages))
-		}
 		appLogger.Info("Company recommendation refresh after pipeline enabled", map[string]interface{}{})
 	} else if config.Worker.RecommendationRefreshAfterPipelineEnabled {
 		appLogger.Warn("Company recommendation refresh after pipeline disabled: AI client or Redis unavailable", map[string]interface{}{})

cmd/worker/bootstrap/config.go

@@ -60,5 +60,4 @@ type AISummarizerConfig struct {
 	MinioRegion                      string        `env:"AI_SUMMARIZER_MINIO_REGION" envDefault:"us-east-1"`
 	MinioBucket                      string        `env:"AI_SUMMARIZER_MINIO_BUCKET" envDefault:"opplens"`
 	RecommendationCacheTTL           time.Duration `env:"AI_RECOMMENDATION_CACHE_TTL" envDefault:"0"`
-	RecommendationPageCacheLanguages string        `env:"AI_RECOMMENDATION_PAGE_CACHE_LANGUAGES" envDefault:"en"`
 }

internal/company/page_cache_refresher.go

@@ -4,4 +4,5 @@ package company
 // Implemented by the tender service on the web API; optional on the worker.
 type RecommendedTendersPageCacheRefresher interface {
 	ScheduleRefreshRecommendedTendersPageCache(companyID string)
+	InvalidateRecommendedTendersPageCache(companyID string)
 }

internal/company/recommendation.go

@@ -467,7 +467,7 @@ func (s *companyService) cacheAIRecommendations(ctx context.Context, companyID s
 		return
 	}
 
-	s.invalidateRecommendedTendersPageCache(ctx, companyID)
+	s.invalidateRecommendedTendersPageCache(companyID)
 	s.scheduleRecommendedTendersPageCacheRefresh(companyID)
 }
 
@@ -489,7 +489,7 @@ func (s *companyService) invalidateAIRecommendationCache(ctx context.Context, co
 			"error":      err.Error(),
 		})
 	}
-	s.invalidateRecommendedTendersPageCache(ctx, companyID)
+	s.invalidateRecommendedTendersPageCache(companyID)
 }
 
 func (s *companyService) buildOnboardingDocuments(fileIDs []string) (string, error) {

internal/company/recommendation_page_cache.go

@@ -1,30 +1,10 @@
 package company
 
-import (
-	"context"
-	"strings"
-)
-
-const recommendedTendersPageCacheKeyPrefix = "ai:recommendations:page:"
-
-func recommendedTendersPageCacheKey(companyID, language string) string {
-	return recommendedTendersPageCacheKeyPrefix +
-		strings.TrimSpace(companyID) + ":" +
-		strings.ToLower(strings.TrimSpace(language))
-}
-
-func (s *companyService) invalidateRecommendedTendersPageCache(ctx context.Context, companyID string) {
-	if s.redisClient == nil {
+func (s *companyService) invalidateRecommendedTendersPageCache(companyID string) {
+	if s.pageCacheRefresher == nil {
 		return
 	}
-
-	for _, language := range s.pageCacheLanguages {
-		lang := strings.ToLower(strings.TrimSpace(language))
-		if lang == "" {
-			continue
-		}
-		_ = s.redisClient.Del(ctx, recommendedTendersPageCacheKey(companyID, lang))
-	}
+	s.pageCacheRefresher.InvalidateRecommendedTendersPageCache(companyID)
 }
 
 func (s *companyService) scheduleRecommendedTendersPageCacheRefresh(companyID string) {
@@ -38,34 +18,3 @@ func (s *companyService) scheduleRecommendedTendersPageCacheRefresh(companyID st
 func (s *companyService) SetRecommendedTendersPageCacheRefresher(refresher RecommendedTendersPageCacheRefresher) {
 	s.pageCacheRefresher = refresher
 }
-
-// SetPageCacheLanguages configures which language variants are invalidated in Redis.
-func (s *companyService) SetPageCacheLanguages(languages []string) {
-	s.pageCacheLanguages = normalizePageCacheLanguages("", languages)
-}
-
-func normalizePageCacheLanguages(defaultLanguage string, languages []string) []string {
-	seen := make(map[string]struct{})
-	out := make([]string, 0, len(languages)+1)
-
-	add := func(lang string) {
-		lang = strings.ToLower(strings.TrimSpace(lang))
-		if lang == "" {
-			return
-		}
-		if _, ok := seen[lang]; ok {
-			return
-		}
-		seen[lang] = struct{}{}
-		out = append(out, lang)
-	}
-
-	add(defaultLanguage)
-	for _, lang := range languages {
-		add(lang)
-	}
-	if len(out) == 0 {
-		out = append(out, "en")
-	}
-	return out
-}

internal/company/service.go

@@ -63,7 +63,6 @@ type companyService struct {
 	pageCacheRefresher     RecommendedTendersPageCacheRefresher
 	redisClient            redis.Client
 	recommendationCacheTTL time.Duration
-	pageCacheLanguages     []string
 	logger                 logger.Logger
 }
 

internal/tender/recommendation_page_cache.go

@@ -35,29 +35,40 @@ func recommendedTendersPageCacheKey(companyID, language string) string {
 		strings.ToLower(strings.TrimSpace(language))
 }
 
-// ScheduleRefreshRecommendedTendersPageCache rebuilds resolved recommendation pages asynchronously.
+// ScheduleRefreshRecommendedTendersPageCache rebuilds the page cache for the service default language.
 func (s *tenderService) ScheduleRefreshRecommendedTendersPageCache(companyID string) {
+	s.schedulePageCacheRefreshForLanguage(companyID, s.defaultLanguage)
+}
+
+// InvalidateRecommendedTendersPageCache drops the cached page for the service default language.
+func (s *tenderService) InvalidateRecommendedTendersPageCache(companyID string) {
 	companyID = strings.TrimSpace(companyID)
 	if companyID == "" || s.redisClient == nil {
 		return
 	}
 
+	ctx, cancel := context.WithTimeout(context.Background(), recommendationPageCacheReadTimeout)
+	defer cancel()
+	s.deleteRecommendedTendersPageCache(ctx, companyID, s.defaultLanguage)
+}
+
+func (s *tenderService) schedulePageCacheRefreshForLanguage(companyID, language string) {
+	companyID = strings.TrimSpace(companyID)
+	language = strings.ToLower(strings.TrimSpace(language))
+	if companyID == "" || language == "" || s.redisClient == nil {
+		return
+	}
+
 	go func() {
 		ctx, cancel := context.WithTimeout(context.Background(), recommendationPageCacheBuildTimeout)
 		defer cancel()
 
-		for _, language := range s.pageCacheLanguages {
-			lang := strings.ToLower(strings.TrimSpace(language))
-			if lang == "" {
-				continue
-			}
-			if err := s.buildRecommendedTendersPageCache(ctx, companyID, lang); err != nil {
-				s.logger.Warn("Failed to refresh recommended tenders page cache", map[string]interface{}{
-					"company_id": companyID,
-					"language":   lang,
-					"error":      err.Error(),
-				})
-			}
+		if err := s.buildRecommendedTendersPageCache(ctx, companyID, language); err != nil {
+			s.logger.Warn("Failed to refresh recommended tenders page cache", map[string]interface{}{
+				"company_id": companyID,
+				"language":   language,
+				"error":      err.Error(),
+			})
 		}
 	}()
 }
@@ -380,40 +391,6 @@ func tenderFromRecommendationResponse(item TenderResponse) Tender {
 	return tender
 }
 
-func normalizePageCacheLanguages(defaultLanguage string, languages []string) []string {
-	seen := make(map[string]struct{})
-	out := make([]string, 0, len(languages)+1)
-
-	add := func(lang string) {
-		lang = strings.ToLower(strings.TrimSpace(lang))
-		if lang == "" {
-			return
-		}
-		if _, ok := seen[lang]; ok {
-			return
-		}
-		seen[lang] = struct{}{}
-		out = append(out, lang)
-	}
-
-	add(defaultLanguage)
-	for _, lang := range languages {
-		add(lang)
-	}
-	if len(out) == 0 {
-		out = append(out, "en")
-	}
-	return out
-}
-
-// ParsePageCacheLanguagesConfig splits a comma-separated language list for cache prewarm.
-func ParsePageCacheLanguagesConfig(raw string) []string {
-	if strings.TrimSpace(raw) == "" {
-		return normalizePageCacheLanguages("en", nil)
-	}
-	return normalizePageCacheLanguages("", strings.Split(raw, ","))
-}
-
 // RecommendedTendersPageCacheKeyPrefix is shared with company invalidation logic.
 const RecommendedTendersPageCacheKeyPrefix = recommendedTendersPageCacheKeyPrefix
 

internal/tender/recommendation_page_cache_test.go

@@ -42,13 +42,3 @@ func TestFilterCachedRecommendedTendersAppliesActiveAndRejectedFilters(t *testin
 		t.Fatalf("got ID %q, want active tender", got[0].ID)
 	}
 }
-
-func TestParsePageCacheLanguagesConfig(t *testing.T) {
-	got := ParsePageCacheLanguagesConfig("en,fr, en")
-	if len(got) != 2 {
-		t.Fatalf("len = %d, want 2", len(got))
-	}
-	if got[0] != "en" || got[1] != "fr" {
-		t.Fatalf("got %v, want [en fr]", got)
-	}
-}

internal/tender/service.go

@@ -92,7 +92,6 @@ type tenderService struct {
 	aiSummarizerStorage  AISummarizerStorage
 	redisClient          redis.Client
 	pageCacheTTL         time.Duration
-	pageCacheLanguages   []string
 	defaultLanguage      string
 }
 
@@ -117,7 +116,6 @@ func NewService(
 	aiStorage AISummarizerStorage,
 	redisClient redis.Client,
 	recommendationPageCacheTTL time.Duration,
-	recommendationPageCacheLanguages []string,
 	defaultLanguage string,
 ) Service {
 	if strings.TrimSpace(defaultLanguage) == "" {
@@ -134,7 +132,6 @@ func NewService(
 		aiSummarizerStorage:  aiStorage,
 		redisClient:          redisClient,
 		pageCacheTTL:         recommendationPageCacheTTL,
-		pageCacheLanguages:   normalizePageCacheLanguages(defaultLanguage, recommendationPageCacheLanguages),
 		defaultLanguage:      strings.ToLower(defaultLanguage),
 	}
 }
@@ -999,7 +996,7 @@ func (s *tenderService) Recommend(ctx context.Context, form *SearchForm, paginat
 	}
 
 	if len(companyIDs) == 0 && companyID != "" {
-		s.ScheduleRefreshRecommendedTendersPageCache(companyID)
+		s.schedulePageCacheRefreshForLanguage(companyID, lang)
 	}
 
 	excluded, excludedByCompany, err := s.loadRecommendationExclusions(ctx, form, companyID, companyIDs)
@@ -1030,7 +1027,7 @@ func (s *tenderService) Recommend(ctx context.Context, form *SearchForm, paginat
 		return nil, err
 	}
 
-	paged := s.buildRecommendedTenderListResponses(pageResult.items, lang)
+	paged := s.buildRecommendedTenderResponsesParallel(ctx, pageResult.items, lang)
 
 	return &SearchResponse{
 		Tenders:  paged,