feat: 初始化 Redis 连接

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/gateway/main.go

@@ -11,6 +11,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/topfans/backend/gateway/config"
 	"github.com/topfans/backend/gateway/router"
+	"github.com/topfans/backend/pkg/database"
 	"github.com/topfans/backend/pkg/logger"
 	"go.uber.org/zap"
 
@@ -66,6 +67,19 @@ func main() {
 	// 3. 设置 Gin 模式
 	gin.SetMode(cfg.Server.Mode)
 
+	// 3.5 初始化 Redis
+	logger.Logger.Info("Connecting to Redis...")
+	if err := database.InitRedis(database.RedisConfig{
+		Host:     cfg.Redis.Host,
+		Port:     cfg.Redis.Port,
+		Password: cfg.Redis.Password,
+		DB:       cfg.Redis.DB,
+	}); err != nil {
+		logger.Logger.Fatal("Failed to connect to Redis", zap.Error(err))
+	}
+	logger.Logger.Info("Redis connected successfully")
+	defer database.CloseRedis()
+
 	// 4. 初始化 Dubbo Clients
 	logger.Logger.Info("Connecting to Dubbo services...")