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 |