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1.7 KiB
1.7 KiB
Cache
https://github.com/hyperf/cache
Config
<?php
return [
'default' => [
'driver' => Hyperf\Cache\Driver\RedisDriver::class,
'packer' => Hyperf\Cache\Packer\PhpSerializer::class,
],
];
How to use
Components provide Cacheable annotation to configure cache prefix, expiration times, listeners, and cache groups.
For example, UserService provides a user method to query user information. When the Cacheable annotation is added, the Redis cache is automatically generated with the key value of user:id
and the timeout time of 9000 seconds. When querying for the first time, it will be fetched from DB, and when querying later, it will be fetched from Cache.
<?php
namespace App\Services;
use App\Models\User;
use Hyperf\Cache\Annotation\Cacheable;
class UserService
{
/**
* @Cacheable(key="user", ttl=9000, listener="user-update")
*/
public function user($id)
{
$user = User::query()->where('id',$id)->first();
if($user){
return $user->toArray();
}
return null;
}
}
Clear Cache
Of course, if the data changes, how to delete the cache? Here we need to use the listener. Next, a new Service provides a way to help us deal with it.
<?php
declare(strict_types=1);
namespace App\Service;
use Hyperf\Di\Annotation\Inject;
use Hyperf\Cache\Listener\DeleteListenerEvent;
use Psr\EventDispatcher\EventDispatcherInterface;
class SystemService
{
/**
* @Inject
* @var EventDispatcherInterface
*/
protected $dispatcher;
public function flushCache($userId)
{
$this->dispatcher->dispatch(new DeleteListenerEvent('user-update', [$userId]));
return true;
}
}