PHP Cache\Cache类代码示例

 /**
  * {@inheritdoc}
  */
 public function deleteAll()
 {
     if ($this->cache instanceof ClearableCache) {
         return $this->cache->deleteAll();
     }
     return false;
 }

 protected function saveCached(\Money\CurrencyPair $pair)
 {
     if ($this->cache) {
         $cacheKey = $this->getCacheKey($pair->getCounterCurrency(), $pair->getBaseCurrency());
         $this->cache->save($cacheKey, $pair, self::CACHE_LIFETIME);
     }
 }

 /**
  * Delete the cache keys
  *
  * @param Cache $cache
  * @param array $keys
  */
 protected function clearCache(Cache $cache, $keys)
 {
     $keys = array_unique($keys);
     foreach ($keys as $key) {
         $cache->delete($key);
     }
 }

 public function __construct(Cache $cache, ValidationService $validationService, Factory $factory = null)
 {
     $this->objects = $cache->fetch("agit.api.object") ?: [];
     $this->factory = $factory;
     AbstractType::setValidationService($validationService);
     AbstractType::setObjectMetaService($this);
 }

 /**
  * Get the list of videos from YouTube
  *
  * @param string $channelId
  * @throws \Mcfedr\YouTube\LiveStreamsBundle\Exception\MissingChannelIdException
  * @return array
  */
 public function getStreams($channelId = null)
 {
     if (!$channelId) {
         $channelId = $this->channelId;
     }
     if (!$channelId) {
         throw new MissingChannelIdException("You must specify the channel id");
     }
     if ($this->cache) {
         $data = $this->cache->fetch($this->getCacheKey($channelId));
         if ($data !== false) {
             return $data;
         }
     }
     $searchResponse = $this->client->get('search', ['query' => ['part' => 'id', 'channelId' => $channelId, 'eventType' => 'live', 'type' => 'video', 'maxResults' => 50]]);
     $searchData = json_decode($searchResponse->getBody()->getContents(), true);
     $videosResponse = $this->client->get('videos', ['query' => ['part' => 'id,snippet,liveStreamingDetails', 'id' => implode(',', array_map(function ($video) {
         return $video['id']['videoId'];
     }, $searchData['items']))]]);
     $videosData = json_decode($videosResponse->getBody()->getContents(), true);
     $streams = array_map(function ($video) {
         return ['name' => $video['snippet']['title'], 'thumb' => $video['snippet']['thumbnails']['high']['url'], 'videoId' => $video['id']];
     }, array_values(array_filter($videosData['items'], function ($video) {
         return !isset($video['liveStreamingDetails']['actualEndTime']);
     })));
     if ($this->cache && $this->cacheTimeout > 0) {
         $this->cache->save($this->getCacheKey($channelId), $streams, $this->cacheTimeout);
     }
     return $streams;
 }

 /**
  * {@inheritdoc}
  */
 public function clear($cacheDir)
 {
     if (!$this->cache instanceof ClearableCache) {
         return;
     }
     $this->cache->deleteAll();
 }

 /**
  * @param ServerRequestInterface $request
  * @param ResponseInterface $response
  * @param callable $next
  * @return ResponseInterface
  */
 public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
 {
     $key = $this->generateKey($request);
     $data = $this->cache->fetch($key);
     if (false !== $data) {
         list($body, $code, $headers) = unserialize($this->cache->fetch($key));
         $response->getBody()->write($body);
         $response = $response->withStatus($code);
         foreach (unserialize($headers) as $name => $value) {
             $response = $response->withHeader($name, $value);
         }
         return $response;
     }
     // prepare headers
     $ttl = $this->config['ttl'];
     $response = $next ? $next($request, $response) : $response;
     $response = $response->withHeader('Cache-Control', sprintf('public,max-age=%d,s-maxage=%d', $ttl, $ttl))->withHeader('ETag', $key);
     // save cache - status code, headers, body
     $body = $response->getBody()->__toString();
     $code = $response->getStatusCode();
     $headers = serialize($response->getHeaders());
     $data = serialize([$body, $code, $headers]);
     $this->cache->save($key, $data, $this->config['ttl']);
     return $response;
 }

 public function getAllProjects()
 {
     $key = "{$this->cachePrefix}-all-projects";
     if ($this->cache && ($projects = $this->cache->fetch($key))) {
         return $projects;
     }
     $first = json_decode($this->client->get('projects.json', ['query' => ['limit' => 100]])->getBody(), true);
     $projects = $first['projects'];
     if ($first['total_count'] > 100) {
         $requests = [];
         for ($i = 100; $i < $first['total_count']; $i += 100) {
             $requests[] = $this->client->getAsync('projects.json', ['query' => ['limit' => 100, 'offset' => $i]]);
         }
         /** @var Response[] $responses */
         $responses = Promise\unwrap($requests);
         $responseProjects = array_map(function (Response $response) {
             return json_decode($response->getBody(), true)['projects'];
         }, $responses);
         $responseProjects[] = $projects;
         $projects = call_user_func_array('array_merge', $responseProjects);
     }
     usort($projects, function ($projectA, $projectB) {
         return strcasecmp($projectA['name'], $projectB['name']);
     });
     $this->cache && $this->cache->save($key, $projects);
     return $projects;
 }

 /**
  * {@inheritdoc}
  */
 public function load()
 {
     $contents = $this->doctrine->fetch($this->key);
     if ($contents !== false) {
         $this->setFromStorage($contents);
     }
 }

 /**
  * @param float $latitude
  * @param float $longitude
  * @return WeatherForecastForDay
  */
 public function getForDay($latitude, $longitude, $timestamp)
 {
     if (!$this->isValidTimestamp($timestamp)) {
         throw new \Exception('Invalid timestamp: ' . $timestamp);
     }
     if (!$this->isValidLatitude($latitude)) {
         throw new \Exception('Invalid latitude: ' . $latitude);
     }
     if (!$this->isValidLongitude($longitude)) {
         throw new \Exception('Invalid longitude: ' . $longitude);
     }
     $latitude = $this->normalizeGeoCoordinate($latitude);
     $longitude = $this->normalizeGeoCoordinate($longitude);
     $timestamp = $this->normalizeTimestamp($timestamp);
     $cacheKey = md5($latitude . $longitude . $timestamp);
     if (false === ($apiData = $this->cache->fetch($cacheKey))) {
         try {
             $apiData = $this->provider->getForDay($latitude, $longitude, $timestamp);
             $this->cache->save($cacheKey, $apiData, 3600 * 6);
             //TTL 6h
         } catch (\Exception $e) {
             return null;
         }
     }
     return new WeatherForecastForDay($apiData);
 }

 /**
  * @param $token
  * @param AuthUser $user
  * @return AccessToken
  */
 public function insertAccessToken($token, AuthUser $user)
 {
     $accessToken = new AccessToken();
     $accessToken->setCreatedAt(new \DateTime())->setId($token)->setUsername($user->getUsername());
     $this->cache->save($token, $accessToken, 604800);
     return $accessToken;
 }

 /**
  * @param BlockHeaderInterface $block
  * @return bool
  */
 public function save(BlockHeaderInterface $block)
 {
     $key = $this->cacheIndexBlk($block);
     $this->blocks->save($key, $block);
     $this->size++;
     return $this;
 }

 public function find($id)
 {
     if (is_array($id)) {
         $id = current($id);
     }
     return $this->cache->fetch($id) ?: null;
 }

 /**
  * Get metadata for a certain class - loads once and caches
  * @param  string                $className
  * @throws \Drest\DrestException
  * @return ClassMetaData         $metaData
  */
 public function getMetadataForClass($className)
 {
     if (isset($this->loadedMetadata[$className])) {
         return $this->loadedMetadata[$className];
     }
     // check the cache
     if ($this->cache !== null) {
         $classMetadata = $this->cache->fetch($this->cache_prefix . $className);
         if ($classMetadata instanceof ClassMetaData) {
             if ($classMetadata->expired()) {
                 $this->cache->delete($this->cache_prefix . $className);
             } else {
                 $this->loadedMetadata[$className] = $classMetadata;
                 return $classMetadata;
             }
         }
     }
     $classMetadata = $this->driver->loadMetadataForClass($className);
     if ($classMetadata !== null) {
         $this->loadedMetadata[$className] = $classMetadata;
         if ($this->cache !== null) {
             $this->cache->save($this->cache_prefix . $className, $classMetadata);
         }
         return $classMetadata;
     }
     if (is_null($this->loadedMetadata[$className])) {
         throw DrestException::unableToLoadMetaDataFromDriver();
     }
     return $this->loadedMetadata[$className];
 }

 /**
  * @Route("/entry-point/{mac}", defaults={"mac" = null})
  * @Method({"GET", "POST"})
  * @Template()
  */
 public function indexAction(Request $request, $mac)
 {
     // Attempting to do anything here as a logged in user will fail. Set the current user token to null to log user out.
     $this->get('security.token_storage')->setToken(null);
     if (!$mac) {
         if (!$request->getSession()->get('auth-data')) {
             // No MAC code, nothing in the session, so we can't help - return to front page.
             return $this->redirectToRoute('barbon_hostedapi_app_index_index');
         }
     } else {
         $cacheKey = sprintf('mac-%s', $mac);
         // If MAC isn't found in the cache, it's already been processed - redirect back to this route without the MAC, and try again.
         if (!$this->cache->contains($cacheKey)) {
             return $this->redirectToRoute('barbon_hostedapi_landlord_authentication_entrypoint_index');
         }
         // store data to session and empty the cache
         $authData = unserialize($this->cache->fetch($cacheKey));
         $request->getSession()->set('auth-data', $authData);
         $this->cache->delete($cacheKey);
     }
     // Decide which tab should start as visible, so that is a registration attempt is in progress it re-shows that tab.
     $selectedTab = $request->query->get('action') ?: 'register';
     if ($request->isMethod(Request::METHOD_POST)) {
         if ($request->request->has('direct_landlord')) {
             $selectedTab = 'register';
         }
     }
     return array('selectedTab' => $selectedTab);
 }