| Total Complexity | 49 |
| Total Lines | 440 |
| Duplicated Lines | 0 % |
| Changes | 2 | ||
| Bugs | 0 | Features | 1 |
Complex classes like DatabaseCacheStore often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use DatabaseCacheStore, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 20 | class DatabaseCacheStore implements CacheerInterface |
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| 21 | { |
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| 22 | /** |
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| 23 | * @var boolean |
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| 24 | */ |
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| 25 | private bool $success = false; |
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| 26 | |||
| 27 | /** |
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| 28 | * @var string |
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| 29 | */ |
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| 30 | private string $message = ''; |
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| 31 | |||
| 32 | /** |
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| 33 | * @var ?CacheLogger |
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| 34 | */ |
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| 35 | private ?CacheLogger $logger = null; |
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| 36 | |||
| 37 | /** |
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| 38 | * @var CacheDatabaseRepository |
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| 39 | */ |
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| 40 | private CacheDatabaseRepository $cacheRepository; |
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| 41 | |||
| 42 | /** @var int|null */ |
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| 43 | private ?int $defaultTTL = null; |
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| 44 | |||
| 45 | /** @var GenericFlusher|null */ |
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| 46 | private ?GenericFlusher $flusher = null; |
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| 47 | |||
| 48 | /** |
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| 49 | * DatabaseCacheStore constructor. |
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| 50 | * |
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| 51 | * @param string $logPath |
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| 52 | * @param array $options |
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| 53 | */ |
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| 54 | public function __construct(string $logPath, array $options = []) |
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| 55 | { |
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| 56 | $this->logger = new CacheLogger($logPath); |
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| 57 | $table = $options['table'] ?? 'cacheer_table'; |
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| 58 | $this->cacheRepository = new CacheDatabaseRepository($table); |
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| 59 | |||
| 60 | // Ensure the custom table exists by running a targeted migration |
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| 61 | $pdo = Connect::getInstance(); |
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| 62 | MigrationManager::migrate($pdo, $table); |
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| 63 | |||
| 64 | if (!empty($options['expirationTime'])) { |
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| 65 | $this->defaultTTL = (int) CacheFileHelper::convertExpirationToSeconds((string) $options['expirationTime']); |
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| 66 | } |
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| 67 | |||
| 68 | $lastFlushFile = FlushHelper::pathFor('db', $table); |
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| 69 | $this->flusher = new GenericFlusher($lastFlushFile, function () { |
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| 70 | $this->flushCache(); |
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| 71 | }); |
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| 72 | $this->flusher->handleAutoFlush($options); |
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| 73 | } |
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| 74 | |||
| 75 | /** |
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| 76 | * Appends data to an existing cache item. |
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| 77 | * |
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| 78 | * @param string $cacheKey |
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| 79 | * @param mixed $cacheData |
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| 80 | * @param string $namespace |
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| 81 | * @return bool |
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| 82 | */ |
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| 83 | public function appendCache(string $cacheKey, mixed $cacheData, string $namespace = ''): bool |
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| 84 | { |
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| 85 | $currentCacheData = $this->getCache($cacheKey, $namespace); |
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| 86 | $mergedCacheData = CacheDatabaseHelper::arrayIdentifier($currentCacheData, $cacheData); |
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| 87 | |||
| 88 | if ($this->updateCache($cacheKey, $mergedCacheData, $namespace)) { |
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| 89 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 90 | return true; |
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| 91 | } |
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| 92 | |||
| 93 | $this->logger->error("{$this->getMessage()} from database driver."); |
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| 94 | return false; |
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| 95 | } |
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| 96 | |||
| 97 | /** |
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| 98 | * Clears a specific cache item. |
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| 99 | * |
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| 100 | * @param string $cacheKey |
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| 101 | * @param string $namespace |
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| 102 | * @return void |
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| 103 | */ |
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| 104 | public function clearCache(string $cacheKey, string $namespace = ''): void |
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| 105 | { |
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| 106 | $data = $this->cacheRepository->clear($cacheKey, $namespace); |
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| 107 | if($data) { |
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| 108 | $this->setMessage("Cache deleted successfully!", true); |
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| 109 | } else { |
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| 110 | $this->setMessage("Cache does not exists!", false); |
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| 111 | } |
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| 112 | |||
| 113 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 114 | } |
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| 115 | |||
| 116 | /** |
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| 117 | * Flushes all cache items. |
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| 118 | * |
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| 119 | * @return void |
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| 120 | */ |
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| 121 | public function flushCache(): void |
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| 130 | |||
| 131 | } |
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| 132 | |||
| 133 | /** |
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| 134 | * Associates one or more keys to a tag using a reserved namespace. |
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| 135 | * |
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| 136 | * @param string $tag |
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| 137 | * @param string ...$keys |
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| 138 | * @return bool |
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| 139 | */ |
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| 140 | public function tag(string $tag, string ...$keys): bool |
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| 141 | { |
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| 142 | $indexKey = "tag:" . $tag; |
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| 143 | $namespace = '__tags__'; |
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| 144 | $existing = $this->cacheRepository->retrieve($indexKey, $namespace) ?? []; |
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| 145 | if (!is_array($existing)) { |
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| 146 | $existing = []; |
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| 147 | } |
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| 148 | foreach ($keys as $key) { |
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| 149 | // Store either raw key or "namespace:key" |
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| 150 | $existing[$key] = true; |
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| 151 | } |
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| 152 | $ok = $this->cacheRepository->store($indexKey, $existing, $namespace, 31536000); |
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| 153 | $this->setMessage($ok ? "Tagged successfully" : "Failed to tag keys", $ok); |
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| 154 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 155 | return $ok; |
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| 156 | } |
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| 157 | |||
| 158 | /** |
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| 159 | * Flush all keys associated with a tag. |
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| 160 | * |
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| 161 | * @param string $tag |
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| 162 | * @return void |
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| 163 | */ |
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| 164 | public function flushTag(string $tag): void |
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| 165 | { |
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| 166 | $indexKey = "tag:" . $tag; |
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| 167 | $namespace = '__tags__'; |
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| 168 | $existing = $this->cacheRepository->retrieve($indexKey, $namespace) ?? []; |
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| 169 | if (is_array($existing)) { |
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| 170 | foreach (array_keys($existing) as $key) { |
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| 171 | if (str_contains($key, ':')) { |
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| 172 | [$np, $k] = explode(':', $key, 2); |
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| 173 | $this->clearCache($k, $np); |
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| 174 | } else { |
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| 175 | $this->clearCache($key, ''); |
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| 176 | } |
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| 177 | } |
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| 178 | } |
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| 179 | $this->cacheRepository->clear($indexKey, $namespace); |
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| 180 | $this->setMessage("Tag flushed successfully", true); |
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| 181 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 182 | } |
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| 183 | |||
| 184 | /** |
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| 185 | * Gets a single cache item. |
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| 186 | * |
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| 187 | * @param string $cacheKey |
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| 188 | * @param string $namespace |
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| 189 | * @param string|int $ttl |
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| 190 | * @return mixed |
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| 191 | */ |
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| 192 | public function getCache(string $cacheKey, string $namespace = '', string|int $ttl = 3600): mixed |
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| 193 | { |
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| 194 | $cacheData = $this->retrieveCache($cacheKey, $namespace); |
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| 195 | if ($cacheData) { |
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| 196 | $this->setMessage("Cache retrieved successfully", true); |
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| 197 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 198 | return $cacheData; |
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| 199 | } |
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| 200 | $this->setMessage("CacheData not found, does not exists or expired", false); |
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| 201 | $this->logger->info("{$this->getMessage()} from database driver."); |
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| 202 | return null; |
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| 203 | } |
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| 204 | |||
| 205 | /** |
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| 206 | * Gets all items in a specific namespace. |
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| 207 | * |
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| 208 | * @param string $namespace |
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| 209 | * @return array |
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| 210 | */ |
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| 211 | public function getAll(string $namespace = ''): array |
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| 222 | } |
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| 223 | |||
| 224 | /** |
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| 225 | * Retrieves multiple cache items by their keys. |
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| 226 | * |
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| 227 | * @param array $cacheKeys |
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| 228 | * @param string $namespace |
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| 229 | * @param string|int $ttl |
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| 230 | * @return array |
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| 231 | */ |
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| 232 | public function getMany(array $cacheKeys, string $namespace = '', string|int $ttl = 3600): array |
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| 233 | { |
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| 234 | $cacheData = []; |
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| 235 | foreach ($cacheKeys as $cacheKey) { |
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| 236 | $data = $this->getCache($cacheKey, $namespace, $ttl); |
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| 237 | if ($data) { |
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| 238 | $cacheData[$cacheKey] = $data; |
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| 239 | } |
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| 240 | } |
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| 241 | if (!empty($cacheData)) { |
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| 242 | $this->setMessage("Cache retrieved successfully", true); |
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| 243 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 244 | return $cacheData; |
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| 245 | } |
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| 246 | $this->setMessage("No cache data found for the provided keys", false); |
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| 247 | $this->logger->info("{$this->getMessage()} from database driver."); |
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| 248 | return []; |
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| 249 | } |
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| 250 | |||
| 251 | /** |
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| 252 | * Checks if a cache item exists. |
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| 253 | * |
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| 254 | * @return string |
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| 255 | */ |
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| 256 | public function getMessage(): string |
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| 257 | { |
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| 258 | return $this->message; |
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| 259 | } |
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| 260 | |||
| 261 | /** |
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| 262 | * Checks if a cache item exists. |
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| 263 | * |
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| 264 | * @param string $cacheKey |
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| 265 | * @param string $namespace |
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| 266 | * @return bool |
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| 267 | */ |
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| 268 | public function has(string $cacheKey, string $namespace = ''): bool |
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| 269 | { |
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| 270 | $cacheData = $this->getCache($cacheKey, $namespace); |
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| 271 | |||
| 272 | if ($cacheData) { |
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| 273 | $this->setMessage("Cache key: {$cacheKey} exists and it's available from database driver.", true); |
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| 274 | $this->logger->debug("{$this->getMessage()}"); |
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| 275 | return true; |
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| 276 | } |
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| 277 | |||
| 278 | $this->setMessage("Cache key: {$cacheKey} does not exist or it's expired from database driver.", false); |
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| 279 | $this->logger->debug("{$this->getMessage()}"); |
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| 280 | |||
| 281 | return false; |
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| 282 | } |
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| 283 | |||
| 284 | /** |
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| 285 | * Checks if the last operation was successful. |
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| 286 | * |
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| 287 | * @return boolean |
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| 288 | */ |
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| 289 | public function isSuccess(): bool |
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| 292 | } |
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| 293 | |||
| 294 | /** |
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| 295 | * Store multiple items in the cache. |
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| 296 | * |
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| 297 | * @param array $items |
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| 298 | * @param string $namespace |
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| 299 | * @param integer $batchSize |
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| 300 | * @return void |
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| 301 | */ |
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| 302 | public function putMany(array $items, string $namespace = '', int $batchSize = 100): void |
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| 303 | { |
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| 304 | $processedCount = 0; |
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| 305 | $itemCount = count($items); |
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| 306 | while ($processedCount < $itemCount) { |
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| 307 | $batchItems = array_slice($items, $processedCount, $batchSize); |
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| 308 | $this->processBatchItems($batchItems, $namespace); |
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| 309 | $processedCount += count($batchItems); |
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| 310 | } |
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| 311 | } |
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| 312 | |||
| 313 | /** |
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| 314 | * Stores an item in the cache with a specific TTL. |
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| 315 | * |
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| 316 | * @param string $cacheKey |
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| 317 | * @param mixed $cacheData |
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| 318 | * @param string $namespace |
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| 319 | * @param string|int $ttl |
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| 320 | * @return bool |
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| 321 | */ |
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| 322 | public function putCache(string $cacheKey, mixed $cacheData, string $namespace = '', string|int $ttl = 3600): bool |
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| 323 | { |
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| 324 | $ttlToUse = $ttl; |
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| 325 | if ($this->defaultTTL !== null && ($ttl === null || (int)$ttl === 3600)) { |
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| 326 | $ttlToUse = $this->defaultTTL; |
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| 327 | } |
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| 328 | if (is_string($ttlToUse)) { |
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| 329 | $ttlToUse = (int) CacheFileHelper::convertExpirationToSeconds($ttlToUse); |
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| 330 | } |
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| 331 | |||
| 332 | if($this->storeCache($cacheKey, $cacheData, $namespace, $ttlToUse)){ |
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| 333 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 334 | return true; |
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| 335 | } |
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| 336 | $this->logger->error("{$this->getMessage()} from database driver."); |
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| 337 | return false; |
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| 338 | } |
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| 339 | |||
| 340 | /** |
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| 341 | * Renews the cache for a specific key with a new TTL. |
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| 342 | * |
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| 343 | * @param string $cacheKey |
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| 344 | * @param string|int $ttl |
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| 345 | * @param string $namespace |
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| 346 | * @return void |
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| 347 | */ |
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| 348 | public function renewCache(string $cacheKey, int | string $ttl, string $namespace = ''): void |
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| 349 | { |
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| 350 | $cacheData = $this->getCache($cacheKey, $namespace); |
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| 351 | if ($cacheData) { |
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| 352 | $this->renew($cacheKey, $ttl, $namespace); |
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| 353 | $this->setMessage("Cache with key {$cacheKey} renewed successfully", true); |
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| 354 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 355 | } |
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| 356 | } |
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| 357 | |||
| 358 | /** |
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| 359 | * Processes a batch of cache items. |
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| 360 | * |
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| 361 | * @param array $batchItems |
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| 362 | * @param string $namespace |
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| 363 | * @return void |
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| 364 | */ |
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| 365 | private function processBatchItems(array $batchItems, string $namespace): void |
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| 366 | { |
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| 367 | foreach($batchItems as $item) { |
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| 368 | CacheDatabaseHelper::validateCacheItem($item); |
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| 369 | $cacheKey = $item['cacheKey']; |
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| 370 | $cacheData = $item['cacheData']; |
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| 371 | $mergedData = CacheDatabaseHelper::mergeCacheData($cacheData); |
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| 372 | $this->putCache($cacheKey, $mergedData, $namespace); |
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| 373 | } |
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| 374 | } |
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| 375 | |||
| 376 | /** |
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| 377 | * Renews the expiration time of a cache item. |
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| 378 | * |
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| 379 | * @param string $cacheKey |
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| 380 | * @param string|int $ttl |
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| 381 | * @param string $namespace |
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| 382 | * @return bool |
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| 383 | */ |
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| 384 | private function renew(string $cacheKey, string|int $ttl = 3600, string $namespace = ''): bool |
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| 385 | { |
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| 386 | $cacheData = $this->getCache($cacheKey, $namespace); |
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| 387 | if ($cacheData) { |
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| 388 | $renewedCache = $this->cacheRepository->renew($cacheKey, $ttl, $namespace); |
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| 389 | if ($renewedCache) { |
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| 390 | $this->setMessage("Cache with key {$cacheKey} renewed successfully", true); |
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| 391 | $this->logger->debug("{$this->getMessage()} from database driver."); |
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| 392 | return true; |
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| 393 | } |
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| 394 | return false; |
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| 395 | } |
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| 396 | return false; |
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| 397 | } |
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| 398 | |||
| 399 | /** |
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| 400 | * Sets a message and its success status. |
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| 401 | * |
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| 402 | * @param string $message |
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| 403 | * @param boolean $success |
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| 404 | * @return void |
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| 405 | */ |
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| 406 | private function setMessage(string $message, bool $success): void |
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| 407 | { |
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| 408 | $this->message = $message; |
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| 409 | $this->success = $success; |
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| 410 | } |
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| 411 | |||
| 412 | /** |
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| 413 | * Retrieves a cache item by its key. |
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| 414 | * @param string $cacheKey |
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| 415 | * @param string $namespace |
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| 416 | * @return mixed |
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| 417 | */ |
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| 418 | private function retrieveCache(string $cacheKey, string $namespace = ''): mixed |
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| 421 | } |
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| 422 | |||
| 423 | /** |
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| 424 | * Stores a cache item. |
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| 425 | * |
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| 426 | * @param string $cacheKey |
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| 427 | * @param mixed $cacheData |
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| 428 | * @param string $namespace |
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| 429 | * @param string|int $ttl |
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| 430 | * @return bool |
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| 431 | */ |
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| 432 | private function storeCache(string $cacheKey, mixed $cacheData, string $namespace = '', string|int $ttl = 3600): bool |
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| 433 | { |
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| 434 | $data = $this->cacheRepository->store($cacheKey, $cacheData, $namespace, $ttl); |
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| 435 | if($data) { |
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| 436 | $this->setMessage("Cache Stored Successfully", true); |
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| 437 | return true; |
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| 438 | } |
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| 439 | $this->setMessage("Already exists a cache with this key...", false); |
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| 440 | return false; |
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| 441 | } |
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| 442 | |||
| 443 | /** |
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| 444 | * Updates an existing cache item. |
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| 445 | * |
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| 446 | * @param string $cacheKey |
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| 447 | * @param mixed $cacheData |
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| 448 | * @param string $namespace |
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| 449 | * @return bool |
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| 450 | */ |
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| 451 | private function updateCache(string $cacheKey, mixed $cacheData, string $namespace = ''): bool |
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| 460 | } |
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| 461 | } |
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| 462 |