[Translation] / dev / urandom story had to say
http://ju.outofmemory.cn/entry/186830
Linux System Tips (1): / dev / random device may cause java program starts slow or time-consuming operation is not normal
https://yq.aliyun.com/articles/128873
https://blog.51cto.com/hipercomer/857870
Some stepped pit deployment of the production environment
https://www.cnblogs.com/waliwaliwa/p/7644253.html