diff --git a/pkg/mining/manager.go b/pkg/mining/manager.go
index b03a670..d98ebb2 100644
--- a/pkg/mining/manager.go
+++ b/pkg/mining/manager.go
@@ -35,8 +35,8 @@ type Manager struct {
 	stopChan    chan struct{}
 	stopOnce    sync.Once
 	waitGroup   sync.WaitGroup
-	dbEnabled   bool
-	dbRetention int
+	databaseEnabled   bool
+	databaseRetention int
 	eventHub    *EventHub
 	eventHubMu  sync.RWMutex // Separate mutex for eventHub to avoid deadlock with main mu
 }
@@ -97,29 +97,29 @@ func (m *Manager) initDatabase() {
 		return
 	}
 
-	m.dbEnabled = cfg.Database.Enabled
-	m.dbRetention = cfg.Database.RetentionDays
-	if m.dbRetention == 0 {
-		m.dbRetention = 30
+	m.databaseEnabled = cfg.Database.Enabled
+	m.databaseRetention = cfg.Database.RetentionDays
+	if m.databaseRetention == 0 {
+		m.databaseRetention = 30
 	}
 
-	if !m.dbEnabled {
+	if !m.databaseEnabled {
 		logging.Debug("database persistence is disabled")
 		return
 	}
 
 	dbCfg := database.Config{
 		Enabled:       true,
-		RetentionDays: m.dbRetention,
+		RetentionDays: m.databaseRetention,
 	}
 
 	if err := database.Initialize(dbCfg); err != nil {
 		logging.Warn("failed to initialize database", logging.Fields{"error": err})
-		m.dbEnabled = false
+		m.databaseEnabled = false
 		return
 	}
 
-	logging.Info("database persistence enabled", logging.Fields{"retention_days": m.dbRetention})
+	logging.Info("database persistence enabled", logging.Fields{"retention_days": m.databaseRetention})
 
 	// Start periodic cleanup
 	m.startDBCleanup()
@@ -140,14 +140,14 @@ func (m *Manager) startDBCleanup() {
 		defer ticker.Stop()
 
 		// Run initial cleanup
-		if err := database.Cleanup(m.dbRetention); err != nil {
+		if err := database.Cleanup(m.databaseRetention); err != nil {
 			logging.Warn("database cleanup failed", logging.Fields{"error": err})
 		}
 
 		for {
 			select {
 			case <-ticker.C:
-				if err := database.Cleanup(m.dbRetention); err != nil {
+				if err := database.Cleanup(m.databaseRetention); err != nil {
 					logging.Warn("database cleanup failed", logging.Fields{"error": err})
 				}
 			case <-m.stopChan:
@@ -569,7 +569,7 @@ func (m *Manager) collectMinerStats() {
 		// Use the miner's GetType() method for proper type identification
 		miners = append(miners, minerInfo{miner: miner, minerType: miner.GetType()})
 	}
-	dbEnabled := m.dbEnabled // Copy to avoid holding lock
+	databaseEnabled := m.databaseEnabled // Copy to avoid holding lock
 	m.mu.RUnlock()
 
 	now := time.Now()
@@ -588,7 +588,7 @@ func (m *Manager) collectMinerStats() {
 					})
 				}
 			}()
-			m.collectSingleMinerStats(miner, minerType, now, dbEnabled)
+			m.collectSingleMinerStats(miner, minerType, now, databaseEnabled)
 		}(mi.miner, mi.minerType)
 	}
 	wg.Wait()
@@ -602,7 +602,7 @@ const statsRetryDelay = 500 * time.Millisecond
 
 // collectSingleMinerStats collects stats from a single miner with retry logic.
 // This is called concurrently for each miner.
-func (m *Manager) collectSingleMinerStats(miner Miner, minerType string, now time.Time, dbEnabled bool) {
+func (m *Manager) collectSingleMinerStats(miner Miner, minerType string, now time.Time, databaseEnabled bool) {
 	minerName := miner.GetName()
 
 	var stats *PerformanceMetrics
@@ -654,7 +654,7 @@ func (m *Manager) collectSingleMinerStats(miner Miner, minerType string, now tim
 	miner.ReduceHashrateHistory(now)
 
 	// Persist to database if enabled
-	if dbEnabled {
+	if databaseEnabled {
 		dbPoint := database.HashratePoint{
 			Timestamp: point.Timestamp,
 			Hashrate:  point.Hashrate,
@@ -723,7 +723,7 @@ func (m *Manager) Stop() {
 		}
 
 		// Close the database
-		if m.dbEnabled {
+		if m.databaseEnabled {
 			if err := database.Close(); err != nil {
 				logging.Warn("failed to close database", logging.Fields{"error": err})
 			}
@@ -733,7 +733,7 @@ func (m *Manager) Stop() {
 
 // GetMinerHistoricalStats returns historical stats from the database for a miner.
 func (m *Manager) GetMinerHistoricalStats(minerName string) (*database.HashrateStats, error) {
-	if !m.dbEnabled {
+	if !m.databaseEnabled {
 		return nil, fmt.Errorf("database persistence is disabled")
 	}
 	return database.GetHashrateStats(minerName)
@@ -741,7 +741,7 @@ func (m *Manager) GetMinerHistoricalStats(minerName string) (*database.HashrateS
 
 // GetMinerHistoricalHashrate returns historical hashrate data from the database.
 func (m *Manager) GetMinerHistoricalHashrate(minerName string, since, until time.Time) ([]HashratePoint, error) {
-	if !m.dbEnabled {
+	if !m.databaseEnabled {
 		return nil, fmt.Errorf("database persistence is disabled")
 	}
 
@@ -763,7 +763,7 @@ func (m *Manager) GetMinerHistoricalHashrate(minerName string, since, until time
 
 // GetAllMinerHistoricalStats returns historical stats for all miners from the database.
 func (m *Manager) GetAllMinerHistoricalStats() ([]database.HashrateStats, error) {
-	if !m.dbEnabled {
+	if !m.databaseEnabled {
 		return nil, fmt.Errorf("database persistence is disabled")
 	}
 	return database.GetAllMinerStats()
@@ -771,5 +771,5 @@ func (m *Manager) GetAllMinerHistoricalStats() ([]database.HashrateStats, error)
 
 // IsDatabaseEnabled returns whether database persistence is enabled.
 func (m *Manager) IsDatabaseEnabled() bool {
-	return m.dbEnabled
+	return m.databaseEnabled
 }
diff --git a/pkg/mining/service.go b/pkg/mining/service.go
index 5f87b5a..747ab26 100644
--- a/pkg/mining/service.go
+++ b/pkg/mining/service.go
@@ -1278,7 +1278,7 @@ func (s *Service) handleHistoryStatus(c *gin.Context) {
 	if manager, ok := s.Manager.(*Manager); ok {
 		c.JSON(http.StatusOK, gin.H{
 			"enabled":       manager.IsDatabaseEnabled(),
-			"retentionDays": manager.dbRetention,
+			"retentionDays": manager.databaseRetention,
 		})
 		return
 	}