Rambo Zhu

一生放荡不羁爱自由

Becoming a better Tech Leader

Becoming a better tech leader https://learning.oreilly.com/videos/the-managers-path software engineer solution architect business anylyst tech leader hard responsibility heavy burden wider sh...

Posted by Yuanbo on July 23, 2020

learning volatile

learning volatile Java Object markword 8 btes - lock info, hashcode, thread lockrecord ref. class reference 4 bytes instances - loss to next object alignment(make times of 8 bytes - 65 bit JVM)...

Posted by Yuanbo on May 20, 2020

Stress control

You need a plan to control stress. Period Select a period of time every day to take a break from everyday tasks. This will help you see things more objectively, ultimately alowing you to be more p...

Posted by Yuanbo on May 20, 2020

learning VUE

learning VUE https://juejin.im/entry/5a54b747518825734216c3df END

Posted by Yuanbo on May 20, 2020

Unit test for Google guave cahce

Use Guava cache in JAVA @Service public class CacheService { // LoadingCache is thread safe and can be safely accessed by multiple concurrent threads private LoadingCache<CacheKey, Boo...

Posted by Yuanbo on May 12, 2020

What is Timer in Java

Java Sleep 实现原理两个问题假设现在是 20018-12-03 12:00:00.000，如果我调用一下 Thread.Sleep(1000) ，在 20018-12-03 12:00:01.000 的时候，这个线程会不会被唤醒？某人的代码中用了一句看似莫明其妙的话：Thread.Sleep(0) 。既然是 Sleep 0 毫秒，那么他跟去掉这句代码相比，有啥区别么？对于...

Posted by Yuanbo on May 2, 2020

What is TCC

TCC-transaction TCC事务即：Try-Confirm-Cancel 。它是基于业务层面的事务定义，把事务运行过程分成 Try、Confirm / Cancel 两个阶段。在每个阶段的逻辑由业务代码控制。每一个初步操作，最终都会被确认或取消。因此，针对一个具体的业务服务，TCC事务机制需要业务系统提供三段业务逻辑：初步操作Try、确认操作Confirm、取消操作Cancel...

Posted by Yuanbo on April 22, 2020

What is consensus algorithm

分布式一致性与共识算法区块链技术是近几年逐渐变得非常热门的技术，以比特币为首的密码货币其实已经被无数人所知晓，但是却很少有人会去研究它们的底层技术，也就是作为一个分布式网络比特币等加密货币是如何工作的。无论是 Bitcoin、Ethereum 还是 EOS，作为一个分布式网络，首先需要解决分布式一致性的问题，也就是所有的节点如何对同一个提案或者值达成共识，这一问题在一个所有节点都是可...

Posted by Yuanbo on April 21, 2020

What is digital certificate

What is digital certificate 数字证书就是网络通讯中标志通讯各方身份信息的一系列数据，其作用类似于现实生活中的身份证。它是由一个权威机构发行的，人们可以在互联网上用它来识别对方的身份。证书的格式遵循ITUTX.509国际标准一个标准的X.509数字证书包含以下一些内容：证书的版本信息；证书的序列号，每个证书都有一个唯一的证书...

Posted by Yuanbo on April 21, 2020

What is interview?

企业招聘员工，对“优秀”的定义是相对的，对合适的要求是绝对的，换句话说，匹配才是招聘的黄金法则。而面试者对于匹配的考察，一般会从四个维度来进行，即价值观的匹配（person-organization）、动机的匹配（person-motivation）、职位的匹配（person-position）、以及发展的匹配（person-development）。熟悉HR的面试要求，才能助你在面试中轻松...

Posted by Yuanbo on February 26, 2020