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# Magento_MysqlMq module **Magento_MysqlMq** provides message queue implementation based on MySQL. Module contain recurring script, declared in `Magento\MysqlMq\Setup\Recurring` class. This script is executed by Magento post each schema installation or upgrade stage and populates the queue table. ## Installation Module creates the following tables: - `queue` - Table storing unique queues - `queue_message` - Queue messages - `queue_message_status` - Relation table to keep associations between queues and messages For information about a module installation in Magento 2, see [Enable or disable modules](https://experienceleague.adobe.com/docs/commerce-operations/installation-guide/tutorials/manage-modules.html). ## Additional information For information about significant changes in patch releases, see [2.3.x Release information](https://experienceleague.adobe.com/docs/commerce-operations/release/notes/overview.html). ### cron options cron group configuration can be set in `etc/crontab.xml`. - `mysqlmq_clean_messages` - clean up old messages from database