PHP code example of harmonyio / cache

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

harmonyio / cache example snippets

 declare(strict_types=1);

namespace Foo;

use Amp\Dns;
use Amp\Dns\Record;
use Amp\Redis\Client;
use HarmonyIO\Cache\Item;
use HarmonyIO\Cache\Key;
use HarmonyIO\Cache\Provider\Redis;
use HarmonyIO\Cache\Ttl;
use function Amp\Dns\query;
use function Amp\wait;

want to cache (in this cache a DNS lookup)
$result = wait(query('www.example.org', Record::A));

// create the cacheable item to be stored in the cache for 1 hour
$itemToCache = new Item($key, json_encode($result), new Ttl(Ttl::ONE_HOUR));

// store the cached item
$cache->store($itemToCache);

// retrieve the item
var_dump($cache->get($key));

 declare(strict_types=1);

namespace HarmonyIO\Cache;

use Amp\Promise;

interface Cache
{
    /**
     * @return Promise<null|string>
     */
    public function get(Key $key): Promise;

    /**
     * @return Promise<bool>
     */
    public function exists(Key $key): Promise;

    /**
     * @return Promise<null>
     */
    public function delete(Key $key): Promise;

    /**
     * @return Promise<bool>
     */
    public function store(Item $item): Promise;
}

 declare(strict_types=1);

namespace Foo;

use HarmonyIO\Cache\Item;
use HarmonyIO\Cache\Key;
use HarmonyIO\Cache\Ttl;

$key = new Key('HttpRequest', 'https://httpbin.org/get', md5('https://httpbin.org/get'));

$itemToCache = new Item($key, 'Result from the http request', new Ttl(60));

 declare(strict_types=1);

namespace Foo;

use HarmonyIO\Cache\Ttl;

$ttl = Ttl::fromDateTime((new \DateTimeImmutable())->add(new \DateInterval('P1D')));

 declare(strict_types=1);

namespace Foo;

use HarmonyIO\Cache\Ttl;

$ttl = new Ttl(10);

 declare(strict_types=1);

namespace Foo;

use HarmonyIO\Cache\Ttl;

$ttl = new Ttl(Ttl::ONE_HOUR);

$hash = md5('SELECT * FROM users WHERE name = ?' . json_encode(['Bobby Tables']));

 declare(strict_types=1);

namespace Foo;

use Amp\Redis\Client;
use HarmonyIO\Cache\Provider\Redis;

$cache = new Redis(new Client('tcp://127.0.0.1:6379'));

 declare(strict_types=1);

namespace Foo;

use HarmonyIO\Cache\Provider\InMemory;

$cache = new InMemory();

 declare(strict_types=1);

namespace HarmonyIO\Cache;

interface CacheableRequest
{
    public function getCachingKey(): Key;

    public function getTtl(): Ttl;
}

 declare(strict_types=1);

namespace HarmonyIO\Cache;

interface CacheableResponse extends \Serializable
{
}