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	diff --git a/src/Engines/CacheRedis.php b/src/Engines/CacheRedis.php
	index 7101285..b409f69 100644
	--- a/src/Engines/CacheRedis.php
	+++ b/src/Engines/CacheRedis.php
	@@ -1,163 +1,164 @@
	<?php

	namespace Keruald\Cache\Engines;

	use Keruald\Cache\Cache;
	use Keruald\Cache\Exceptions\CacheException;

	use DateInterval;
	use DateTimeImmutable;

	use Redis;
	use RedisException;

	class CacheRedis extends Cache {

	///
	/// Constants - default value
	///

	const DEFAULT_SERVER = "localhost";

	const DEFAULT_PORT = 6379;

	///
	/// Properties
	///

	private Redis $redis;

	///
	/// Constructors
	///

	public function __construct (Redis $client) {
	$this->redis = $client;
	}

	public static function load (array $config) : Cache {
	//Checks extension is okay
	if (!extension_loaded("redis")) {
	throw new CacheException("Can't initialize Redis cache engine: PHP extension redis not loaded.");
	}

	$client = new Redis();
	try {
	$client->connect(
	$config["server"] ?? self::DEFAULT_SERVER,
	$config["port"] ?? self::DEFAULT_PORT,
	);

	if (array_key_exists("database", $config)) {
	$client->select($config["database"]);
	}

	} catch (RedisException $ex) {
	throw new CacheException(
	"Can't initialize Redis cache engine: Can't connect to Redis server",
	0,
	$ex
	);
	}

	return new self($client);
	}

	///
	/// Cache operations
	///

	public function get (string $key, mixed $default = null) : mixed {
	try {
	$value = $this->redis->get($key);
	} catch (RedisException $ex) {
	throw new CacheException("Can't get item", 0, $ex);
	}

	return match ($value) {
	false => $default,
	default => unserialize($value),
	};
	}

	function set (
	string $key,
	mixed $value,
	null\|int\|DateInterval $ttl = null
	) : bool {
	try {
	+ $value = serialize($value);
	if ($ttl === null) {
	- $this->redis->set($key, serialize($value));
	+ $this->redis->set($key, $value);
	} else {
	$this->redis->setex($key, self::parse_interval($ttl), $value);
	}
	} catch (RedisException $ex) {
	throw new CacheException("Can't set item", 0, $ex);
	}

	return true;
	}

	public function delete (string $key) : bool {
	try {
	$countDeleted = $this->redis->del($key);
	} catch (RedisException $e) {
	throw new CacheException("Can't delete item", 0, $ex);
	}

	return $countDeleted === 1;
	}

	public function clear () : bool {
	try {
	$this->redis->flushDB();
	} catch (RedisException $e) {
	throw new CacheException("Can't clear cache", 0, $ex);
	}

	return true;
	}

	public function has (string $key) : bool {
	try {
	$count = $this->redis->exists($key);
	} catch (RedisException $e) {
	throw new CacheException("Can't check item", 0, $ex);
	}

	return $count === 1;
	}

	///
	/// Overrides for multiple operations
	///

	public function deleteMultiple (iterable $keys) : bool {
	$keys = [...$keys];
	$expectedCount = count($keys);

	try {
	$countDeleted = $this->redis->del($keys);
	} catch (RedisException $e) {
	throw new CacheException("Can't delete items", 0, $ex);
	}

	return $countDeleted === $expectedCount;
	}

	///
	/// Helper methods
	///

	private static function parse_interval (DateInterval\|int $ttl) : int {
	if (is_integer($ttl)) {
	return $ttl;
	}

	$start = new DateTimeImmutable;
	$end = $start->add($ttl);

	return $end->getTimestamp() - $start->getTimestamp();
	}

	}

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