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                ``` > find / -name rabbitmq-defaults > /usr/lib/rabbitmq/lib/rabbitmq_server-3.6.15/sbin/rabbitmq-defaults > vim /usr/lib/rabbitmq/lib/rabbitmq_server-3.6.15/sbin/rabbitmq-defaults # 文件中可以看到配置文件路徑,我這里是/etc/rabbitmq/rabbitmq,但是發現我該路徑并沒有文件 > vim /etc/rabbitmq/rabbitmq # 內容復制 [https://github.com/rabbitmq/rabbitmq-server/edit/master/docs/rabbitmq.conf.example](https://github.com/rabbitmq/rabbitmq-server/edit/master/docs/rabbitmq.conf.example) > #這里有個坑是, 我本來是想配置優化MQ性能,加了這個配置文件后,重啟服務,已有的持久化隊列消息不見了,隊列名還在 > service rabbitmq-server stop > service rabbitmq-server start ``` ### 上面重啟消息丟失的坑找到了。隊列下面還有`消息`概念,消息也需要使用持久化投遞方式 ``` $msg = new AMQPMessage($msgBody, array('delivery_mode' => AMQPMessage::DELIVERY_MODE_PERSISTENT)); ``` [TOC] ## 線程占用內存配置 `vm_memory_high_watermark` 默認是0.4,即當服務占用內存達到服務器總內存的百分之四十,性能會下降。如果是單獨的MQ服務器,可以調高。我這里調成0.6試試
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