diff --git a/lib/Phpfastcache/Core/Item/ExtendedCacheItemTrait.php b/lib/Phpfastcache/Core/Item/ExtendedCacheItemTrait.php
index 5ccfd44f..1ed2888b 100644
--- a/lib/Phpfastcache/Core/Item/ExtendedCacheItemTrait.php
+++ b/lib/Phpfastcache/Core/Item/ExtendedCacheItemTrait.php
@@ -77,15 +77,8 @@ public function setDriver(ExtendedCacheItemPoolInterface $driver): ExtendedCache
      */
     public function getEncodedKey(): string
     {
-        // Only calculate the encoded key on demand to save resources
         if (!isset($this->encodedKey)) {
-            $keyHashFunction = $this->driver->getConfig()->getDefaultKeyHashFunction();
-
-            if ($keyHashFunction) {
-                $this->encodedKey = $keyHashFunction($this->getKey());
-            } else {
-                $this->encodedKey = $this->getKey();
-            }
+            $this->encodedKey = $this->driver->getEncodedKey($this->getKey());
         }
 
         return $this->encodedKey;
diff --git a/lib/Phpfastcache/Core/Pool/DriverBaseTrait.php b/lib/Phpfastcache/Core/Pool/DriverBaseTrait.php
index f928500a..8fb00aef 100644
--- a/lib/Phpfastcache/Core/Pool/DriverBaseTrait.php
+++ b/lib/Phpfastcache/Core/Pool/DriverBaseTrait.php
@@ -142,6 +142,24 @@ public static function getItemClass(): string
         return self::$cacheItemClasses[static::class];
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function getEncodedKey(string $key): string
+    {
+        $keyHashFunction = $this->getConfig()->getDefaultKeyHashFunction();
+
+        if ($keyHashFunction) {
+            if (\is_callable($keyHashFunction)) {
+                return $keyHashFunction($key);
+            }
+            throw new PhpfastcacheLogicException('Unable to build the encoded key (defaultKeyHashFunction is not callable)');
+        }
+
+        return $key;
+    }
+
+
 
     /**
      * @param ExtendedCacheItemInterface $item
diff --git a/lib/Phpfastcache/Core/Pool/ExtendedCacheItemPoolInterface.php b/lib/Phpfastcache/Core/Pool/ExtendedCacheItemPoolInterface.php
index 2687135a..2701be8f 100644
--- a/lib/Phpfastcache/Core/Pool/ExtendedCacheItemPoolInterface.php
+++ b/lib/Phpfastcache/Core/Pool/ExtendedCacheItemPoolInterface.php
@@ -77,6 +77,12 @@ public static function getConfigClass(): string;
      */
     public static function getItemClass(): string;
 
+    /**
+     * @param string $key
+     * @return string
+     */
+    public function getEncodedKey(string $key): string;
+
     /**
      * @return ConfigurationOptionInterface
      */
diff --git a/lib/Phpfastcache/Drivers/Couchbasev3/Driver.php b/lib/Phpfastcache/Drivers/Couchbasev3/Driver.php
index 34d8ccf7..226e19e7 100644
--- a/lib/Phpfastcache/Drivers/Couchbasev3/Driver.php
+++ b/lib/Phpfastcache/Drivers/Couchbasev3/Driver.php
@@ -22,6 +22,7 @@
 use Couchbase\ClusterOptions;
 use Couchbase\Collection;
 use Couchbase\DocumentNotFoundException;
+use Couchbase\GetResult;
 use Couchbase\Scope;
 use Couchbase\UpsertOptions;
 use DateTimeInterface;
@@ -35,6 +36,8 @@
 use Phpfastcache\Exceptions\PhpfastcacheDriverCheckException;
 use Phpfastcache\Exceptions\PhpfastcacheInvalidArgumentException;
 use Phpfastcache\Exceptions\PhpfastcacheLogicException;
+use Phpfastcache\Exceptions\PhpfastcacheUnsupportedException;
+use Phpfastcache\Exceptions\PhpfastcacheUnsupportedMethodException;
 
 /**
  * @property Cluster $instance Instance of driver service
@@ -105,6 +108,33 @@ protected function driverRead(ExtendedCacheItemInterface $item): ?array
         }
     }
 
+    /**
+     * @param ExtendedCacheItemInterface $item
+     * @return ?array<string, mixed>
+     */
+    protected function driverReadMultiple(ExtendedCacheItemInterface ...$items): array
+    {
+        try {
+            $keys = $this->getKeys($items, true);
+            $results = [];
+            /**
+             * CouchbaseBucket::get() returns a GetResult interface
+             */
+            /** @var GetResult $document */
+            foreach ($this->getCollection()->getMulti($this->getKeys($items, true)) as $document) {
+                $content = $document->content();
+                if ($content) {
+                    $decodedDocument = $this->decodeDocument($content);
+                    $results[$decodedDocument[ExtendedCacheItemPoolInterface::DRIVER_KEY_WRAPPER_INDEX]] = $this->decodeDocument($content);
+                }
+            }
+
+            return $results;
+        } catch (DocumentNotFoundException) {
+            return [];
+        }
+    }
+
     /**
      * @param ExtendedCacheItemInterface $item
      * @return bool
@@ -135,8 +165,7 @@ protected function driverDelete(string $key, string $encodedKey): bool
     {
 
         try {
-            $this->getCollection()->remove($encodedKey);
-            return true;
+            return $this->getCollection()->remove($encodedKey)->mutationToken() !== null;
         } catch (DocumentNotFoundException) {
             return true;
         } catch (CouchbaseException) {
@@ -144,12 +173,39 @@ protected function driverDelete(string $key, string $encodedKey): bool
         }
     }
 
+
+    /**
+     * @param string[] $keys
+     * @return bool
+     */
+    protected function driverDeleteMultiple(array $keys): bool
+    {
+        try {
+            $this->getCollection()->removeMulti(array_map(fn(string $key) => $this->getEncodedKey($key), $keys));
+            return true;
+        } catch (CouchbaseException) {
+            return false;
+        }
+    }
+
+
     /**
      * @return bool
+     * @throws PhpfastcacheUnsupportedMethodException
      */
     protected function driverClear(): bool
     {
+        if (!$this->instance->buckets()->getBucket($this->getConfig()->getBucketName())->flushEnabled()) {
+            $this->instance->buckets()->getBucket($this->getConfig()->getBucketName())->enableFlush(true);
+            if (!$this->instance->buckets()->getBucket($this->getConfig()->getBucketName())->flushEnabled()) {
+                throw new PhpfastcacheUnsupportedMethodException(
+                    'Flushing operation is not enabled on your Bucket. See https://docs.couchbase.com/server/current/manage/manage-buckets/flush-bucket.html'
+                );
+            }
+        }
+
         $this->instance->buckets()->flush($this->getConfig()->getBucketName());
+
         return true;
     }
 
diff --git a/tests/lib/Helper/TestHelper.php b/tests/lib/Helper/TestHelper.php
index 8de0c807..7152a34c 100644
--- a/tests/lib/Helper/TestHelper.php
+++ b/tests/lib/Helper/TestHelper.php
@@ -18,6 +18,7 @@
 use League\CLImate\CLImate;
 use Phpfastcache\Api;
 use Phpfastcache\Config\ConfigurationOptionInterface;
+use Phpfastcache\Core\Item\ExtendedCacheItemInterface;
 use Phpfastcache\Core\Pool\ExtendedCacheItemPoolInterface;
 use Phpfastcache\Event\EventManagerInterface;
 use Phpfastcache\Exceptions\PhpfastcacheDriverCheckException;
@@ -543,12 +544,20 @@ public function runCRUDTests(ExtendedCacheItemPoolInterface|PhpfastcacheAbstract
             }
             unset($cacheItem);
 
+            $this->printInfoText('Testing deleting multiple keys at once.');
             $cacheItems = $pool->getItems([$cacheKey, $cacheKey2]);
             foreach ($cacheItems as $cacheItem) {
                 $cacheItem->set(str_shuffle($cacheValue));
                 $pool->save($cacheItem);
             }
             $pool->deleteItems(array_keys($cacheItems));
+
+            if(count(array_filter(array_map(fn(ExtendedCacheItemInterface $item) => $item->isHit(), $pool->getItems([$cacheKey, $cacheKey2])))) === 0) {
+                $this->assertPass('The cache items does no longer exists in pool.');
+            } else {
+                $this->assertFail('The cache items still exists in pool.');
+                return;
+            }
         }
 
         $this->printInfoText(