php编写缓存机制的优化策略_php编写Redis集成的详细教程

$client = new Predis\Client([
    'scheme' => 'tcp',
    'host'   => '127.0.0.1',
    'port'   => 6379,
]);

$client->set('user:1001', json_encode(['name' => 'Alice', 'age' => 30]));
$user = json_decode($client->get('user:1001'), true);

$cacheKey = "query:users:active";
$cachedResult = $client->get($cacheKey);

if ($cachedResult !== null) {
    return json_decode($cachedResult, true);
}

$result = mysqli_query($conn, "SELECT * FROM users WHERE status = 'active'");
$data = mysqli_fetch_all($result, MYSQLI_ASSOC);
$client->setex($cacheKey, 3600, json_encode($data)); // 缓存1小时
return $data;

$cacheDir = __DIR__ . '/cache';

$filePath = $cacheDir . '/' . md5($key) . '.cache';

$dataToCache = [
    'expire' => time() + 1800, // 30分钟有效
    'value'  => $content
];
file_put_contents($filePath, serialize($dataToCache));

if (file_exists($filePath)) {
    $cached = unserialize(file_get_contents($filePath));
    if (time() < $cached['expire']) {
        return $cached['value'];
    }
}

opcache.enable=1
opcache.memory_consumption=256
opcache.max_accelerated_files=20000
opcache.ttl=7200

var_dump(opcache_get_status());

mysqli_query($conn, "UPDATE users SET email = 'new@example.com' WHERE id = 1");
$client->del("user:1"); // 删除单个用户缓存

$client->del("query:users:active", "stats:user_count");

$client->publish('cache:invalidated', 'user:1');