feat(project): 项目完结

internal/infrastructure/cache/redis.go

@@ -0,0 +1,35 @@
+package cache
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/redis/go-redis/v9"
+)
+
+type RedisConfig struct {
+	Required bool
+	Addr     string
+	Password string
+	DB       int
+}
+
+func OpenRedis(config RedisConfig) (*redis.Client, error) {
+	if strings.TrimSpace(config.Addr) == "" {
+		if config.Required {
+			return nil, fmt.Errorf("redis addr is required")
+		}
+		return nil, nil
+	}
+	client := redis.NewClient(&redis.Options{
+		Addr:     config.Addr,
+		Password: config.Password,
+		DB:       config.DB,
+	})
+	if err := client.Ping(context.Background()).Err(); err != nil {
+		_ = client.Close()
+		return nil, fmt.Errorf("ping redis: %w", err)
+	}
+	return client, nil
+}