drupal - DatabaseQueue和BatchQueue之间的Drupal区别

Question

查看Drupal 队列文档，不清楚DatabaseQueue和BatchQueue之间有什么区别？都是先进先出吗？它们会过期吗？串行含义不是并发处理？

Answer 1

从 Batch.php 的来源：

/**
 * Defines a batch queue handler used by the Batch API.
 *
 * This implementation:
 * - Ensures FIFO ordering.
 * - Allows an item to be repeatedly claimed until it is actually deleted (no
 *   notion of lease time or 'expire' date), to allow multipass operations.
 *
 * Stale items from failed batches are cleaned from the {queue} table on cron
 * using the 'created' date.
 *
 * @ingroup queue
 */
 class Batch extends DatabaseQueue {

批处理扩展了 DatabaseQueue。根据我的经验，batch它最常与表单一起使用，因为它会在构建后自动处理批处理。

• 是的，先进先出。
• 不，物品不会过期。
• 是的，串行处理。