diff --git a/src/Driver/AbstractDriver.php b/src/Driver/AbstractDriver.php
index 21368a4..0bbacb1 100644
--- a/src/Driver/AbstractDriver.php
+++ b/src/Driver/AbstractDriver.php
@@ -60,4 +60,23 @@ abstract class AbstractDriver implements DriverInterface, LoggerAwareInterface {
 
 		return $output;
 	}
+
+	/**
+	 * Set multiple cache values
+	 *
+	 * @param array $items
+	 * @param int|null $expires
+	 * @return bool
+	 */
+	public function setMultiple(array $items, ?int $expires = NULL): bool
+	{
+		$setResults = [];
+		foreach ($items as $k => $v)
+		{
+			$setResults[] = $this->set($k, $v, $expires);
+		}
+
+		// Only return true if all the results are true
+		return array_reduce($setResults, fn ($carry, $item) => $item && $carry, TRUE);
+	}
 }
\ No newline at end of file
diff --git a/src/Driver/ApcuDriver.php b/src/Driver/ApcuDriver.php
index 4ed9dbd..616417d 100644
--- a/src/Driver/ApcuDriver.php
+++ b/src/Driver/ApcuDriver.php
@@ -86,13 +86,29 @@ class ApcuDriver extends AbstractDriver {
 	 * @param int $expires
 	 * @return bool
 	 */
-	public function set(string $key, $value, ?int $expires = 0): bool
+	public function set(string $key, $value, ?int $expires = NULL): bool
 	{
 		$ttl = $this->getTTLFromExpiration($expires);
 
 		return apcu_store($key, $value, $ttl);
 	}
 
+	/**
+	 * Set multiple cache values
+	 *
+	 * @param array $items
+	 * @param int|null $expires
+	 * @return bool
+	 */
+	public function setMultiple(array $items, ?int $expires = NULL): bool
+	{
+		$ttl = $this->getTTLFromExpiration((int)$expires);
+
+		return ($expires === NULL)
+			? apcu_store($items)
+			: apcu_store($items, NULL, $ttl);
+	}
+
 	/**
 	 * Remove an item from the cache
 	 *
@@ -153,9 +169,9 @@ class ApcuDriver extends AbstractDriver {
 	 * @param int $expires
 	 * @return int
 	 */
-	protected function getTTLFromExpiration(int $expires): int
+	protected function getTTLFromExpiration($expires): int
 	{
-		$ttl = $expires - time();
+		$ttl = (int)$expires - time();
 
 		return ($ttl < 0) ? 0 : $ttl;
 	}
diff --git a/src/Driver/DriverInterface.php b/src/Driver/DriverInterface.php
index 4dd6356..61263a3 100644
--- a/src/Driver/DriverInterface.php
+++ b/src/Driver/DriverInterface.php
@@ -36,7 +36,7 @@ interface DriverInterface {
 	 * @param int $expires
 	 * @return bool
 	 */
-	public function set(string $key, $value, ?int $expires = 0): bool;
+	public function set(string $key, $value, ?int $expires = NULL): bool;
 
 	/**
 	 * Get the value for the selected cache key
@@ -54,6 +54,15 @@ interface DriverInterface {
 	 */
 	public function getMultiple(array $keys = []): array;
 
+	/**
+	 * Set multiple cache values
+	 *
+	 * @param array $items
+	 * @param int|null $expires
+	 * @return bool
+	 */
+	public function setMultiple(array $items, ?int $expires = NULL): bool;
+
 	/**
 	 * Remove an item from the cache
 	 *
diff --git a/src/Driver/MemcachedDriver.php b/src/Driver/MemcachedDriver.php
index a244ece..036deb8 100644
--- a/src/Driver/MemcachedDriver.php
+++ b/src/Driver/MemcachedDriver.php
@@ -121,9 +121,25 @@ class MemcachedDriver extends AbstractDriver {
 	 * @param int $expires
 	 * @return bool
 	 */
-	public function set(string $key, $value, ?int $expires = 0): bool
+	public function set(string $key, $value, ?int $expires = NULL): bool
 	{
-		return $this->conn->set($key, $value, $expires);
+		return ($expires === NULL)
+			? $this->conn->set($key, $value)
+			: $this->conn->set($key, $value, $expires);
+	}
+
+	/**
+	 * Set multiple cache values
+	 *
+	 * @param array $items
+	 * @param int|null $expires
+	 * @return bool
+	 */
+	public function setMultiple(array $items, ?int $expires = NULL): bool
+	{
+		return ($expires === NULL)
+			? $this->conn->setMulti($items)
+			: $this->conn->setMulti($items, $expires);
 	}
 
 	/**
diff --git a/src/Driver/NullDriver.php b/src/Driver/NullDriver.php
index 9c8aacc..c443bc1 100644
--- a/src/Driver/NullDriver.php
+++ b/src/Driver/NullDriver.php
@@ -72,7 +72,7 @@ class NullDriver extends AbstractDriver {
 	 * @param int $expires
 	 * @return bool
 	 */
-	public function set(string $key, $value, ?int $expires = 0): bool
+	public function set(string $key, $value, ?int $expires = NULL): bool
 	{
 		$this->store[$key] = $value;
 		return $this->store[$key] === $value;
diff --git a/src/Driver/RedisDriver.php b/src/Driver/RedisDriver.php
index dfc6b69..f29838f 100644
--- a/src/Driver/RedisDriver.php
+++ b/src/Driver/RedisDriver.php
@@ -88,16 +88,16 @@ class RedisDriver extends AbstractDriver {
 	 * @param int $expires
 	 * @return bool
 	 */
-	public function set(string $key, $value, ?int $expires = 0): bool
+	public function set(string $key, $value, ?int $expires = NULL): bool
 	{
 		$value = serialize($value);
 
-		if ($expires !== 0)
+		if ($expires !== NULL)
 		{
-			return (bool) $this->conn->set($key, $value, 'EX', $expires);
+			return $this->conn->set($key, $value, 'EX', $expires) === 'OK';
 		}
 
-		return (bool)$this->conn->set($key, $value);
+		return $this->conn->set($key, $value) === 'OK';
 	}
 
 	/**
diff --git a/src/ItemCollection.php b/src/ItemCollection.php
index 9b72c86..5628b34 100644
--- a/src/ItemCollection.php
+++ b/src/ItemCollection.php
@@ -33,7 +33,7 @@ class ItemCollection extends ArrayIterator implements JsonSerializable {
 	 *
 	 * @var CacheItemInterface[]
 	 */
-	protected $items = [];
+	protected array $items = [];
 
 	/**
 	 * Create the collection object from the raw
diff --git a/src/Teller.php b/src/Teller.php
index 2dfccb3..325389d 100644
--- a/src/Teller.php
+++ b/src/Teller.php
@@ -145,6 +145,10 @@ class Teller implements SimpleCache\CacheInterface, LoggerAwareInterface {
 	{
 		$this->validateKeys($values, TRUE);
 
+		return ($ttl === NULL)
+			? $this->driver->setMultiple((array)$values)
+			: $this->driver->setMultiple((array)$values, $ttl);
+
 		$setResults = [];
 		foreach ($values as $k => $v)
 		{