Add redis driver

Signed-off-by: Asai Neko <sugar@sne.moe>

data/drivers/redis.go

@@ -0,0 +1,22 @@
+package drivers
+
+import (
+	"context"
+
+	"github.com/redis/go-redis/v9"
+)
+
+func Redis(dsn RedisDSN) (*redis.UniversalClient, error) {
+	// Connect to Redis
+	rdb := redis.NewUniversalClient(&redis.UniversalOptions{
+		Addrs:      dsn.Hosts,
+		MasterName: dsn.Master,
+		Username:   dsn.Username,
+		Password:   dsn.Password,
+		DB:         dsn.DB,
+	})
+	ctx := context.Background()
+	// Ping Redis
+	_, err := rdb.Ping(ctx).Result()
+	return &rdb, err
+}