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<?php |
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namespace Padosoft\SuperCacheInvalidate\Helpers; |
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use Illuminate\Support\Facades\Cache; |
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use Illuminate\Support\Facades\DB; |
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use Illuminate\Support\Facades\Redis; |
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class SuperCacheInvalidationHelper |
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{ |
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/** |
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* Insert a cache invalidation event into the database. |
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* |
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* @param string $type 'key' or 'tag' |
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* @param string $identifier The cache key or tag to invalidate |
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* @param string|null $reason Reason for invalidation (optional) |
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* @param int $priority Priority of the event |
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* @param array $associatedIdentifiers Optional array of associated tags or keys |
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* @param int|null $totalShards Total number of shards (from config if null) |
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*/ |
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public function insertInvalidationEvent( |
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string $type, |
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string $identifier, |
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?string $reason = null, |
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int $priority = 0, |
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array $associatedIdentifiers = [], |
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?int $totalShards = null |
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): void { |
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$totalShards = $totalShards ?? config('super_cache_invalidate.total_shards', 10); |
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$shard = crc32($identifier) % $totalShards; |
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$data = [ |
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'type' => $type, |
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'identifier' => $identifier, |
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'reason' => $reason, |
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'priority' => $priority, |
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'event_time' => now(), |
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'processed' => 0, |
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'shard' => $shard, |
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]; |
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// Insert the event and get its ID |
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$eventId = DB::table('cache_invalidation_events')->insertGetId($data); |
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// Insert associated identifiers |
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if (!empty($associatedIdentifiers)) { |
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$associations = []; |
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foreach ($associatedIdentifiers as $associated) { |
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$associations[] = [ |
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'event_id' => $eventId, |
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'associated_type' => $associated['type'], // 'key' or 'tag' |
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'associated_identifier' => $associated['identifier'], |
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'created_at' => now(), |
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]; |
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} |
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DB::table('cache_invalidation_event_associations')->insert($associations); |
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} |
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} |
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/** |
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* Acquire a lock for processing a shard. |
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* |
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* @param int $shardId The shard number |
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* @param int $lockTimeout Lock timeout in seconds |
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* @return string|false The lock value if acquired, false otherwise |
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*/ |
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public function acquireShardLock(int $shardId, int $lockTimeout): bool|string |
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{ |
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$lockKey = "shard_lock:$shardId"; |
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$lockValue = uniqid('', true); |
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$isLocked = Redis::set($lockKey, $lockValue, 'NX', 'EX', $lockTimeout); |
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return $isLocked ? $lockValue : false; |
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} |
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/** |
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* Release the lock for a shard. |
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* |
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* @param int $shardId The shard number |
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* @param string $lockValue The lock value to validate ownership |
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*/ |
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public function releaseShardLock(int $shardId, string $lockValue): void |
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{ |
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$lockKey = "shard_lock:$shardId"; |
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$currentValue = Redis::get($lockKey); |
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if ($currentValue === $lockValue) { |
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Redis::del($lockKey); |
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} |
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} |
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} |
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padosoft /
laravel-super-cache-invalidate
