diff --git a/service/cache.go b/service/cache.go
index 43ec439..00b3abd 100644
--- a/service/cache.go
+++ b/service/cache.go
@@ -9,7 +9,7 @@
 	"strings"
 	"time"
 
-	cfg "github.com/korap/korap-mcp/config"
+	"github.com/korap/korap-mcp/config"
 	"github.com/korap/korap-mcp/logger"
 	"github.com/maypok86/otter"
 	"github.com/rs/zerolog"
@@ -31,54 +31,29 @@
 type Cache struct {
 	cache  *otter.Cache[string, *CacheEntry]
 	logger zerolog.Logger
-	config CacheConfig
+	config *config.CacheConfig
 }
 
-// CacheConfig configures the cache behavior
-type CacheConfig struct {
-	// Enabled controls whether caching is active
-	Enabled bool
-	// DefaultTTL is the default time-to-live for cache entries
-	DefaultTTL time.Duration
-	// SearchTTL is the TTL for search results
-	SearchTTL time.Duration
-	// MetadataTTL is the TTL for metadata and corpus information
-	MetadataTTL time.Duration
-	// MaxSize is the maximum number of cache entries
-	MaxSize int
-}
-
-// DefaultCacheConfig returns a default cache configuration
-func DefaultCacheConfig() CacheConfig {
-	return CacheConfig{
-		Enabled:     true,
-		DefaultTTL:  5 * time.Minute,
-		SearchTTL:   2 * time.Minute,  // Search results change less frequently
-		MetadataTTL: 15 * time.Minute, // Metadata is more stable
-		MaxSize:     1000,
-	}
-}
-
-// NewCache creates a new cache instance
-func NewCache(config CacheConfig) (*Cache, error) {
+// NewCache creates a new cache instance from config.CacheConfig
+func NewCache(cacheConfig *config.CacheConfig) (*Cache, error) {
 	// Create default logging config for cache
-	logConfig := &cfg.LoggingConfig{
+	logConfig := &config.LoggingConfig{
 		Level:  "info",
 		Format: "text",
 	}
 
-	if !config.Enabled {
+	if !cacheConfig.Enabled {
 		return &Cache{
 			cache:  nil,
 			logger: logger.GetLogger(logConfig),
-			config: config,
+			config: cacheConfig,
 		}, nil
 	}
 
 	// Create otter cache with specified capacity
-	cache, err := otter.MustBuilder[string, *CacheEntry](config.MaxSize).
+	cache, err := otter.MustBuilder[string, *CacheEntry](cacheConfig.MaxSize).
 		CollectStats().
-		WithTTL(config.DefaultTTL).
+		WithTTL(cacheConfig.GetDefaultTTL()).
 		Build()
 	if err != nil {
 		return nil, fmt.Errorf("failed to create cache: %w", err)
@@ -87,7 +62,7 @@
 	return &Cache{
 		cache:  &cache,
 		logger: logger.GetLogger(logConfig),
-		config: config,
+		config: cacheConfig,
 	}, nil
 }
 
@@ -188,9 +163,9 @@
 		"hit_ratio":    stats.Ratio(),
 		"evictions":    stats.EvictedCount(),
 		"max_size":     c.config.MaxSize,
-		"default_ttl":  c.config.DefaultTTL.String(),
-		"search_ttl":   c.config.SearchTTL.String(),
-		"metadata_ttl": c.config.MetadataTTL.String(),
+		"default_ttl":  c.config.DefaultTTL,
+		"search_ttl":   c.config.SearchTTL,
+		"metadata_ttl": c.config.MetadataTTL,
 	}
 }
 
@@ -200,17 +175,17 @@
 
 	// Search endpoints get shorter TTL
 	if strings.Contains(endpoint, "search") || strings.Contains(endpoint, "query") {
-		return c.config.SearchTTL
+		return c.config.GetSearchTTL()
 	}
 
 	// Metadata and corpus endpoints get longer TTL
 	if strings.Contains(endpoint, "corpus") || strings.Contains(endpoint, "metadata") ||
 		strings.Contains(endpoint, "statistics") || strings.Contains(endpoint, "info") {
-		return c.config.MetadataTTL
+		return c.config.GetMetadataTTL()
 	}
 
 	// Default TTL for other endpoints
-	return c.config.DefaultTTL
+	return c.config.GetDefaultTTL()
 }
 
 // Close closes the cache and cleans up resources