refactor: Update Redis client to use go-redis/v9 package

cache/redis/integration_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/redis/go-redis/v9"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -17,7 +18,7 @@ const (
 )
 
 func TestCache(t *testing.T) {
-	cache, err := New(Options{
+	cache, err := New(&redis.Options{
 		Addr:     dsn,
 		Password: "", // no password set
 		DB:       0,  // use default DB

cache/redis/redis.go

@@ -7,22 +7,23 @@ import (
 	"time"
 
 	"github.com/beatlabs/patron/cache"
-	"github.com/beatlabs/patron/client/redis"
+	patronredis "github.com/beatlabs/patron/client/redis"
+	"github.com/redis/go-redis/v9"
 )
 
 var _ cache.TTLCache = &Cache{}
 
 // Cache encapsulates a Redis-based caching mechanism.
 type Cache struct {
-	rdb redis.Client
+	rdb *redis.Client
 }
 
-// Options exposes the struct from go-redis package.
-type Options redis.Options
-
 // New creates a cache returns a new Redis client that will be used as the cache store.
-func New(opt Options) (*Cache, error) {
-	redisDB := redis.New(redis.Options(opt))
+func New(opt *redis.Options) (*Cache, error) {
+	redisDB, err := patronredis.New(opt)
+	if err != nil {
+		return nil, err
+	}
 	return &Cache{rdb: redisDB}, nil
 }